quick question

[LoneWolf]

This comes up saying expected indentifier (356, 6)=

void switch(string &in asItem, string &in asEntity)
{


(rest isnt neccessary, says that the line, void switch... isnt identified right?).

What does this mean?

I have the void switch under a useitemcallback =

AddUseItemCallback("", "hammer", "lever1", "switch", true);



So the hammer is used on lever1 which activated the void switch. What is wrong with my void switch then?