st: foreach

["Ms. Marilyn Ibarra" <ibarra@uga.edu>]

I have data that is coded as "si" or "no".  I need to change this to numeric variables.  I tried the following but keep getting an error message that says, "varlist not found". Can anyone tell me what I am doing wrong?

Here is the code:

foreach x in varlist p03a01 p03a01a-p03a01m {
	gen y = (`x' == "si")
	replace y = 0 if (`x' =="no")
	drop `x'
	rename y `x'
	}

Thank you in advance,
Marilyn. 
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