Can't filter lookup field according to user role

Hello,

I need to display the value "Monthly rate" for user role "Student affairs". So, I added a filter for UsrHousingBookingType Lookup as shown below but nothing is applied.

Any help is appreciated!

attributes: {
"IsSysAdmin": {
                "dataValueType": this.Terrasoft.DataValueType.BOOLEAN,
                "type": this.Terrasoft.ViewModelColumnType.VIRTUAL_COLUMN,
            },
"UsrBookingTypeCollection": {
                "dataValueType": Terrasoft.DataValueType.COLLECTION,
                "value": Ext.create("Terrasoft.Collection")
            }
},
methods: {
			onEntityInitialized: function() {
                this.callParent(arguments);
				var roleName = "Student Affairs";
				var select = Ext.create("Terrasoft.EntitySchemaQuery", {
					rootSchemaName: "SysUserInRole",
					rowCount: 1
				});
 
                select.addMacrosColumn(Terrasoft.QueryMacrosType.PRIMARY_COLUMN, "Id");
				select.addColumn("SysUser");
				select.addColumn("SysRole");
                var filters = Ext.create("Terrasoft.FilterGroup");
				filters.logicalOperation = Terrasoft.LogicalOperatorType.AND;
			select.filters.addItem(select.createColumnFilterWithParameter(Terrasoft.ComparisonType.EQUAL, "SysUser", Terrasoft.SysValue.CURRENT_USER.value));
				select.filters.addItem(select.createColumnFilterWithParameter(Terrasoft.ComparisonType.EQUAL, "SysRole", roleName));
select.filters = filters;
 
                select.getEntityCollection(function(result) {
                    if (!result.success || result.collection.getItems().length === 0) {
                        this.set("IsSysAdmin", false); 
                    }
                    else {
                        this.set("IsSysAdmin", true); 
                    }
                }, this);
            },
 
				getBookingTypeValues: function(searchValue, list) {
                var esq = Ext.create("Terrasoft.EntitySchemaQuery", {
                    rootSchemaName:
                    "UsrHousingBookingType"
                });
                esq.addMacrosColumn(Terrasoft.QueryMacrosType.PRIMARY_COLUMN, "value");
                esq.addMacrosColumn(Terrasoft.QueryMacrosType.PRIMARY_DISPLAY_COLUMN, "displayValue");
 
                var positionColumn = esq.addColumn("UsrTestSort");
                positionColumn.orderDirection = Terrasoft.OrderDirection.ASC;
 
                esq.getEntityCollection(function(result) {
                    if (result.success) {
                        list.clear();
                        var preObject = {};
                        result.collection.each(function(item) {
                            if (item.values.displayValue === "Monthly rate"){
                                if (this.get("IsSysAdmin") === true){
                                    preObject[item.get("value")] = item.values;
                                }
                            }
                            else 
                            {
                                preObject[item.get("value")] = item.values;
                            }
                        }, this);
                        list.loadAll(preObject);
                    }
                }, this);
            },
 
	diff: /**SCHEMA_DIFF*/[
{
                "operation": "merge",
                "name": "UsrHousingBookingTypead96e815-e022-4b8b-842f-00aaa7ab3f54",
                "values": {
                    "layout": {
                        "colSpan": 24,
                        "rowSpan": 1,
                        "column": 0,
                        "row": 9
                    }, 
                    "controlConfig": {
                        "list": {
                            "bindTo": "UsrBookingTypeCollection"
                        },
                        "prepareList": {
                            "bindTo": "getBookingTypeValues"
                        }
                    }
                }
            },
]

Many thanks,

Mouna.