I'm trying to show a mask on my gridpanel in the rowselect listener of the checkboxselectionmodel of my gridpanel.

The code is executing, but nothing appears on the window.

GridPanelUnit.getEl().mask("Searching for rows with same conditions...", "x-mask-loading");

The weird part is, that when i'm in debug mode, and i execute the code via the immediate window, then the mask is showing...

Maybe it's important to say that it is a user control.

Kind Regards,