use a TextItem filter a grid

I want to be able to use a TextItem in a form to filter a grid on every new keypress.

My approch is to use OnKeyUpHandler and filter the grid based on the new value in the TextItem.

The problem:
When keys are pressed at a fast rate some of the characters presse are missing in the field.

Is there a "keyBurstEnd" handler :)

SmartClient Version: v9.0p_2014-01-26/PowerEdition Deployment (built 2014-01-26) on FF 26.0