I have a problem with one of my gridfilters (it is stringfilter)
I have to set it programmatically. I am able to set the value, but not the radiobutton that determines if the JSON sent to the server ask for an "equal" query or "like" query. I want equal, i set the value of gridfilter in this way

numeroFilter.inputRadio.items[1].checked = false;
numeroFilter.inputRadio.items[0].checked = true;
numeroFilter.setActive(true, false);

the "equal" radiobutton is checked but the JSON sent to the server is always "LIKE".

How can i solve this?