loop never end even if true

Hi All could plesae guide what is wrong in the below script

the folloowing script never ends even the object is set to true. do i need to modify anything on below script

While (ControlCommand("Documents - odeeqa@slc07ivz.us.oracle.com - WinSCP","","[CLASS:TDirView; INSTANCE:1]","Is Visible", ""))<>1
 
MsgBox(1,"",ControlFocus("Documents - odeeqa@slc07ivz.us.oracle.com - WinSCP","","[CLASS:TDirView; INSTANCE:1]"))
 WEnd

Send("{alt}")