Trouble Passing Banks to user32 api functions

I thought that might be the problem. When I passed the function an empty bank I got an empty message box. Working through, the code only failed when I reached the string. This still left me stuck as I had no idea how to pass the address of the variable storing the string.

Thanks for the help. I may well email you for that dll if I cant find it myself or another way around in the api.. just occured to me I may be able to write the dll myself quite easily by passing the string to a function in C and then returning the address as an int.