Calling functions from user-defined DLLs
When calling a function from a custom DLL, the function is not recognized.
The DLL needs to be loaded using the lr_load_dll function. The DLL also needs to be compiled with the functions called from LoadRunner as external. If you look at the DLL with Depends, it will show the function with a blue "e" next to it indicating that it as externally referable.
The syntax for loading the DLL is
lr_load_dll("Full path to the dll");
Note: The Dll should be exporting the functions in C style and declaration of the function should be included to be able to compile the script