Changing singleSelect property of GridControls at runtime

Hi ,
I need to change singleSelect property of grid controls at runtime.I tried to use setSingleSelectProp method of GRIDCollection but it didn’t work.
I made my own implementation somehow .But I wonder if there is an api method to do that ?

Thanks in advance.

…status quo: no, no official API to do so. This not a runtime property.
Bjoern