Post the details to replicate your issue using the information gathered from the troubleshooting guide (seriously...if we cannot reproduce your problem because of lack of information or directions, we cannot assist you).

same here on original Steam game...

I have the same problem please help

Options
-------

Numpad 1: Modify Health
Numpad 2: Modify Offense
Numpad 3: Modify Defense
Numpad 4: Modify WillPower
Numpad 5: Modify Grenades
Numpad 6: Modify Fire Rockets
Numpad 7: Modify Shredder Rockets
Numpad 8: Modify Medkits
Numpad 9: Add Money
Numpad +: Add Value
Numpad -: Subtract Value
Numpad *: Super Value
Numpad 0: Barracks Health
Numpad /: Barracks Aim
Numpad .: Barracks Defense
[ Key: Barracks Rank
] Key: Barracks Kills
/ Key: Barracks Willpower
, Key: Add Engineers
. Key: Add Scientists

Notes
-------

As always, it's best to make several SAVES along the
way in long, strategic games like this. That way
you can reverse or revert back to previous saves
if you want to undo changes you made to units.

The developers have added steam anti-cheat triggers
to this game. Likely they did this to try and stop
online cheating. At any rate, the instructions on how
to use this trainer are slightly different.

The following options are to be used with the Add Value
and Subtract Value and Super Value options (below).
You need to be in the action portion of the game.

Make sure that you press the option key BEFORE you tab to
the unit you want to affect. For instance, press the
Modify Health option and you will hear 'Activated', and
then press TAB to move to the next unit. Wait for the
sound 'Deactivated'. The currently selected unit's values will
be shown in the inventory they have and you can press F1
to see the attributes like Offense and Health values.
Next, press one of the keys (Numpad 1 through Numpad 8)
to select the item to modify. Next, press either the
Add Value, the Subtract Value, or the Super Value key
to modify the value. For instance, if the unit has
Grenades and you want to add a grenade, press Numpad 5
and then press Numpad + to add a grenade. If you want
the unit to have a massive amount of Health, press
Numpad 1 and then Numpad *. You may have to Tab away
and back to the unit to see it has changed. Likely
these will remain at the level you set until the end
of the mission, and then they will reset. If the unit
isn't equipped with the item that the option modifies,
then likely the option won't work. For instance,
trying to give a unit Medkits when the unit isn't
equipped with them or for them won't work. If you want to
affect a different unit, you will have to press the key
that will affect the unit and then tab to the unit you wish
to affect before it says 'Deactivated'.

Numpad 1: Modify Health - use with Numpad +,-,* to modify
Numpad 2: Modify Offense - use with Numpad +,-,* to modify
Numpad 3: Modify Defense - use with Numpad +,-,* to modify
Numpad 4: Modify WillPower - use with Numpad +,-,* to modify
Numpad 5: Modify Grenades - use with Numpad +,-,* to modify
Numpad 6: Modify Fire Rockets - use with Numpad +,-,* to modify
Numpad 7: Modify Shredder Rockets - use with Numpad +,-,* to modify
Numpad 8: Modify Medkits - use with Numpad +,-,* to modify

Numpad 9: Add Money - while you are in the Base portion of
the game, press this key to add more money. You
may have to enter a section or purchase something
to see it has increased.

Use the following options with the above Numpad 1 through Numpad 8
options as well as the below Numpad 0 through ] Key options to
affect the values. For Super Value, this will set the value to
1000. Press Super Value again, and the value resets to 1. As
stated before, Press the appropriate key FIRST before using these
keys. It's probably best not to give yourself 1000 grenades and
rockets. The maximum Barracks Rank you can have is 7.

Numpad +: Add Value
Numpad -: Subtract Value
Numpad *: Super Value

The following options are to be used with the Add Value
and Subtract Value and Super Value options (above).
While in the Base portion of the game, Enter the Barracks
and then click VIEW SOLDIERS. Press the option key you wish
to use to affect a soldier and you will hear 'Activated'.
Next, Select a soldier before you hear 'Deactivated'. You can
also press the option and then push one of the arrow keys below
a soldier if you are already viewing a soldier. Just keep in mind
that you PRESS THE OPTION KEY and hear 'Activated' and then need
to select the soldier you wish to affect before you hear the
'Deactivated'. Then you can use the other options to affect the
value for the soldier. At this point you will need to press eithe
the Add Value, the Subtract Value, or the Super Value key
to modify the value. For instance if you want to increase
the Rank of the unit, press the [ Key and then press Numpad +.
Once you have set these values, if you SAVE your game, these
values likely will become PERMENANT, so make sure you have
them where you want them and correct. You may have to swap
to a different unit and come back to see that the changes
have occurred.

Numpad 0: Barracks Health
Numpad /: Barracks Aim
Numpad .: Barracks Defense
[ Key: Barracks Rank
] Key: Barracks Kills
/ Key: Barracks Willpower

, Key: Add Engineers - Before you use this option, make sure you are
at a Base. Also, you need to make sure you are already
building at least ONE item. From the main Base screen, press
the ENGINEERING tab. Next press the option key and then press
ESC to leave the engineering to add more. If you add too
many, the trainer will reset you back to 5. You may have to
go back into the engineering bay and back to see it has increased.

. Key: Add Scientists - Before you use this option, make sure you are
at a Base. From the main Base screen, press the RESEARCH tab
Next press the option key and then press ESC to leave the
research bay to add more. If you add too many, the trainer
will reset you back to 5. You may have to go b

I've tried normally, and as Administrator, and I get the exact same result.

First, I confirmed the trainer's working by having it add money, which it did successfully.

Then I attempted to alter solder stats in the barracks:

- Clicked on the 'Barracks' button in the base screen = Saw the Barracks option menu, (View soldiers, OTS, hire, etc).

- Clicked on 'View Soldiers' = Got the list of my soldiers.

- Pressed 'Numpad 0' (Health) = Hear "Activated"

- Clicked on one of my soldiers = Shows the profile of that soldier.

- Pressed 'Numpad +' (Add value) = Nothing happens, even with repeated pressing. After a couple of seconds I hear "Deactivated"

- Pressed 'Numpad +' = Head "activated" on each press.

- Changed a different soldier and then changed back, values unchanged.

Also, while viewing a soldier in the barracks:

- Pressed '[' (rank) = Hear "Activated"

- Pressed the arrows on the bottom to change to a different soldier, the pressed 'Numpad +' = Changes to different soldier, but no changes. After a few seconds, I hear "Deactivated"

- Pressed 'Numpad +' = Hear "Activated", but no changes occur.

So what am I doing wrong?

Is not first time to use trainer. With older versions never have problems. Latest not working during combat. Maybe is problem in OS, Steam version or something else. My OS is Windows 8 Pro x64, Steam is latest build (25 Mar 2013), and XCOM is original latest version.

Great job.