>Thanks for suggestions. We tried to avoid writing a select case with 76 branches and finally found that vb6 feature which eased the work. Im surprised that vb5 doesnt allow indirect calls( like in vfp ).

That is a rare feature that is almost exclusive to scripting languages like the xbase family. In C, the solution would be function pointers. A function pointer is literally a pointer to a function, somewhat analogous to an object reference. Perhaps you could package the functions as methods of the same name for a set of classes, and initialize an array of object references. Inheritance would be useful for this, but since the class definitions are simple it is not essential.