How to modify quick filter in Timeline.

Hi All,
 
I am trying to apply quick filter in the contact section under "All Email" Tab such that is should show all the mails related to the current user 
 
Below is the handler code:
 
	handlers: /**SCHEMA_HANDLERS*/[
	{
		request: "crt.LoadDataRequest",
		handler: async (request, next) => {
	/*if (request.dataSourceName === "ByOwnerQuickFilterInTimeline_ComboBox_List_DS") 
		{
		  const userId = Terrasoft.SysValue.CURRENT_USER.value;
		  console.log(userId);
		  //Create a filter to match the owner field with the current user's ID
			const filter = new sdk.FilterGroup();
			await filter.addExistsFilter("[SysAdminUnit:Contact:Id].Id");
		   //workaround for filters
			const newFilter = Object.assign({}, filter);
			newFilter.items = filter.items;
			request.parameters.push({
						type: "filter",
						value: newFilter
					    });
			console.log("testing");
			request.$context.attributes.ByOwnerQuickFilterInTimeline_Value[0] = [
 					 {
    				checkedState: true,
    				displayValue: "Lori Espinoza",
    				value: "ccb53f93-d5ab-4121-8598-63a8a694eeb"
  					}
					];
 
				console.log("Test");
				return await next?.handle(request);
			}
	}