When i try to use a SLOT function name starting with an integer [like void 3DupdateStatus(){} ], i am getting compile errors like

Error 1 error C2059: syntax error : 'bad suffix on number'
Error 2 error C2059: syntax error : 'constant'
Error 3 error C2238: unexpected token(s) preceding ';'

Is there any SLOT naming rules which don't allow integers at the beginning of SLOT function names ?