Multi select column filter issue

[harshadaram]

Hi,

I am using multi select column filter in my application. I am able to select multiple options using this feature. But, I am only able to select multiple options by clicking on SHIFT+ Up arrow or SHIFT+down arrow or SHIFT clicking multiple options or by LEFT CLICK+dragging on the options. If I dont do this, my previous selections are getting cleared and I can only select single option. Is there any possibility or option for me to select multiple options without using SHIFT key. I want to just select multiple options one after another and old options selected should not be cleared. And, if I click again on already selected option, it should be unselected. Please help me asap.