[Zope] Let tag

I must be dense - Am using the following Let tag: <dtml-let xvar=o_misc xtag="Seller Name" xseller=xtagval> (o_misc is a variable and xtagval is a dtml-method) When I try to save the document I get the following error: Expression (Python) Syntax error: unexpected EOF while parsing , for tag <dtml-let xvar=o_misc xtag="Seller Name" xseller=xtagval>, on line 8 of mergedat.txt The error does not occur if I remove the xtag="Seller Name" line ???Anyone have any ideas. This seems to fit the proper syntax as shown in the Let Tag How-to.?????? Jim Sanford