how to chage key board key information from a hook

[atifbhatti]

HI,

Can somebody help me.
I am using keyboard message hook WH_GETMESSAGE to intercept the message, perform certain check, change the message (key information) depending on how the check went through.
The code I have written right now does perfectly well for notepad but it does not change the key information in the application I am targeting to use it for.
Any opinions/suggestions ?
right now I am using MSG->wParam = VK_(whatever) to change the key input on need.
The target application was developed using power builder

regards
Atif