A Visual Basic script file may be executed via SilkTest using any BASIC interpreter and Command Line or the SYS_Execute() function. One example of a BASIC interpreter is BScript which is free software and open-sourced.
Example of SYS_Execute function:
SYS_Execute ("bscript test.vbs")
If you have more than one function created in the file, you will be unable to call any specific function as you will be calling the entire file for execution. However, if you have one function defined in the file, you will be able to pass it parameters thus: