infopath 表单的xpath问题
20004 2013-09-06 10:25:07 count(xdXDocument:GetDOM("listname")/dfs:myFields/dfs:dataFields/d:SharePointListItem_RW/d:Title[(../d:Author/pc:Person/pc:DisplayName = "usernmae") and (. = "username" and ../substring-before(d:Modified, "T") = xdDate:Today())])
这里的 /substring-before(d:Modified, "T") 是哪里出错了