How can I avoid errors using a complex snippet when I need to re-run the snippet because I want to change an initial variable?

[George_Marinos]

Copy of Snippet "Family History of CRC"

Complex snippet of Family History of Colon Cancer - to be shared in the "Snippet Repository" Family History of Colon Cancer: {note}{formmenu: default=No; Yes; name=Family_History}{endnote}{if: Family_History==No}nil known.{else}{note}{formmenu: Select FDR or SDR;FDR; SDR; name=fhcrc}{endnote}{if: fhcrc=="FDR"}{formmenu: Select family member; Father; Mother; Older Brother; Younger Brother; Older Sister; Younger Sister; name=FDR}{elseif: fhcrc=="SDR"}{formmenu: Select family member; Grandparent;…