Disabling Dimension filter

Hi Experts,

I'm using SAP Design studio 1.6.

I am using a dimension filter and I've to make it disable on a button click.

Does any one have any idea, which css is to be used ?

I've used
.sapMInputBaseReadonlyInner .sapMInputBaseDisabledInner
.sapMInputBaseStateInner .sapMInputBaseInner classes for this purpose. But no success.

Any help will be greatly appreciated.

Thanks!!!