ESQ Error

var eventType = "Wedding";
var esqDetail = this.Ext.create("Terrasoft.EntitySchemaQuery", {
                    									rootSchemaName: "UsrEventDemo"
                									});
 
esqDetail.addColumn("UsrName");		
var groupFilters = this.Ext.create("Terrasoft.FilterGroup");
 
var filterTournType = this.Terrasoft.createColumnFilterWithParameter(this.Terrasoft.ComparisonType.EQUAL, "UsrTypeId.Name", eventType);
 
 
                				var filterId = this.Terrasoft.createColumnFilterWithParameter(this.Terrasoft.ComparisonType.NOT_EQUAL, "UsrName", thisId);
                				var filterIsActive = this.Terrasoft.createColumnFilterWithParameter(this.Terrasoft.ComparisonType.EQUAL, "UsrIsActive", "1");
                				groupFilters.addItem(filterTournType);
                				groupFilters.logicalOperation = this.Terrasoft.LogicalOperatorType.AND;
                				groupFilters.addItem(filterIsActive);
                				groupFilters.logicalOperation = this.Terrasoft.LogicalOperatorType.AND;
                				groupFilters.addItem(filterId);
                				esqDetail.filters.add(groupFilters);
								esqDetail.getEntityCollection(function(result) {
									 if (!result.success) {
										 Terrasoft.showInformation("Request Error.");
                                     }
                               })

The above code returns ItemNotFoundException error with a message Collection item with  name UsrTypeId not found.



I have UsrEvent object and it has a lookup called event type.  Please, help me understand what is wrong with the above syntax.