how we can use dependent filter CustomAttributeFilter for example i want Topic filter option on the basis of category selection

This can be done through the use of parent filters: https://sdk.gooddata.com/gooddata-ui-apidocs/v8.8.0/docs/sdk-ui-filters.iattributefilterprops.parentfilters.html

will you please give me example for that

Hi Gaurav, there are a plethora of resources available at your fingertips which you are seemingly missing. We do highly recommend you to review the documentation and take the free University Courses before demanding implementation examples and replies. You can find a general overview of how filters work on the platform HERE.