ExDLL - Any way to figure out how many variables were passed in?

When using ExDLL, is there any way to figure out how many variables were passed in?

If the user goofed up, and forgot to pass in enough parameters, I would like to return an error, rather than read too far on the stack, and corrupt things...

Plug-ins use the NSIS stack so if you keep calling popstring until it returns 0 then you've got everything. The problem there is if there were already items on the stack before the plug-in call then you will read those as well. Therefore if you are using a non fixed amount of plug-in arguments then you should require the last argument to be /end so you know when you have to stop popping off the stack.

Stu