Apply a filter to a datagrid by code (Freedom UI)

Hello,
 

Can you share an example of the implemented code? Screenshots with an example page would also be helpful.

On page Load, 2 is not filtered by 1

		handlers: /**SCHEMA_HANDLERS*/[
            {
                request: "crt.HandleViewModelInitRequest",
                handler: async (request, next) => {
                    await next?.handle(request);
                    request.$context.events$.subscribe((async (evt) => {
 
                        if (evt?.type === "finish-load-model-attributes" && evt?.payload?.PageParameters_UsrTextParameter1_p75os8h) {
 
                              var siren = await request.$context[
                                    clientTool.findPageParameterByDesignName(request, "UsrNumeroSIREN")
                              ];
                              await clientTool.reloadGridDetail(request, "DataGrid_yoo8q38DS");
                        }
 
                    }));
                }
            },
            {
                request: "crt.LoadDataRequest",
                handler: async (request, next) => {
                    console.log("LoadDataRequest - START");
 
                    if(request.dataSourceName === "DataGrid_yoo8q38DS") {
                        console.log("LoadDataRequest - DS");
                        var siren = await request.$context[
                          clientTool.findPageParameterByDesignName(request, "UsrNumeroSIREN")
                        ];              
 
                        if (siren) {
                            console.log("LoadDataRequest - SIREN=" + siren);
                            if (typeof request.parameters === "undefined") {
                                console.log("Init request.parameters");
                                request.parameters = [];  // Initialize it as an empty object or some default value
                            }                          
    						if(request.parameters) {
                                const filter = new sdk.FilterGroup();
                                await filter.addSchemaColumnFilterWithParameter(sdk.ComparisonType.Equal, "UsrNumSiren", siren);
 
                                // note, these lines are only needed due to an issue with filters in Creatio-DevKit SDK
                                // expected to be fixed in Creatio 8.1
                                const newFilter = Object.assign({}, filter);
                                newFilter.items = filter.items;
 
                                request.parameters.push({
                                    type: "filter",
                                    value: newFilter
                                });
                            }
                        }                        
                    }
 
                    return await next?.handle(request);
                }
            },
 
            {
                request: "crt.HandleViewModelAttributeChangeRequest",
                handler: async (request, next) => {
                    if(request.attributeName === clientTool.findPageParameterByDesignName(request, "UsrNumeroSIREN")) {
                      console.log("HandleViewModelAttributeChangeRequest");
                      await clientTool.reloadGridDetail(request, "DataGrid_yoo8q38DS"); 
                    }
                    return next?.handle(request);
                }
            }
        ]/**SCHEMA_HANDLERS*/,