Multi select look filter in page parameter

Hi All,

We are creating a pre-config page where we have two page parameters fields, one is a lookup (lookup 1) and other is multi select with another lookup. I have created a mapping of both the lookup tables. I want to filter multi select field based on the value selected in lookup 1. How can I implement this?

handlers: /**SCHEMA_HANDLERS*/[
			{
  request: "crt.LoadDataRequest",
  handler: async (request, next) => {
    // Ensure this runs only for your MultiSelect list data source
	    console.log("Current DataSourceName:", request.dataSourceName);
	   console.log("EntitySchema:", request.entitySchemaName);
    // Ensure it's the right source + schema
    if (request.dataSourceName !== "MultiSelect_ugo4wdi_List_DS") {
		console.log("Hello I am in a log box 1234");
      return await next?.handle(request);
    }
    const filter = new sdk.FilterGroup();
    // Filter where ImpStateRegion == 'State'
    await filter.addSchemaColumnFilterWithParameter(
      sdk.ComparisonType.Equal,
      "ImpStateRegion", // <-- Column in ImpStateInterestMultiselect to filter on
      "State"           // <-- The fixed value to filter by
    );
    // Workaround for Creatio DevKit filter bug
    const newFilter = Object.assign({}, filter);
	  console.log("Hello I am in a log box");
    newFilter.items = filter.items;
    // Add filter to request parameters
    request.parameters.push({
      type: "filter",
      value: newFilter
    });
    // Proceed with next handler
    return await next?.handle(request);
  }
}
		]/**SCHEMA_HANDLERS*/,