@@ -6662,7 +6662,7 @@ U.MD.D.I.openApplicationTeacherUpload = function (str, cid, stage, task, tool, s
_box.appendChild(_iframe);
_box.appendChild(_jie);
_formdiv = new U.UF.UI.form(
- "CocoPi" + _username,
+ "CocoPi-" + _username,
_box, {
"id": "CocoPi" + cid + stage + task + tool,
"style": {
