Hallo.
Trying an searching I solved the problem.
I write the solution here for any interested:
MC.Explorer.GetViewFilter;
MessageBox( "test", $__CMDRESULT, 0 );
I suggest you to explain better the meaning and the use of $__CMDRESULT in the manual, AND explain better the use of MC.Explorer.GetViewFilter and other "get" functions.
Archimede