I am new using psychopy and I tried a simple experiment with words browsing an excel spread sheet
The problem is when I browse my excel file it is ok, no problem, my variables are shown, but when I run
the experiment it says that the variables have not been defined, even when I use the $ symbol. I just dont know what to do anymore, I cannot do anything because this basic problem has not been solved !! 
can you please help me?
and all the answers are to use the $ symbol or and to browse the excel file, I have done both things but it still does not work out ! please help !
Sorry about my english hehe not my first language 