Prevent DCM Click to change stage

Hi,

I struggle with the onActiveStageClick method of SectionActionsDashboard.

The following doesn't work, I see that there is a onActiveStageClickAsync: async function, but not sure how I can execute an esq and wait for the result.

			onActiveStageClick: function(oldValue, value) {
				var scope = this;
				var valid = false;
				Terrasoft.chain(
					function (next) {
						if (!this._isMasterEntityValid()) {
							valid = false;
							next();
						}
 
						if (this.get("EntitySchemaName") == "UsrDemandes") {
 
							var parentValues = this.getColumnsValues(["UsrTypeDePage", "Id"]);
							var typePage = parentValues["UsrTypeDePage"]
							if (typePage &&
								typePage.value === UsrConsts.Demande.TypePage.DP_LE.value &&
								value === UsrConsts.Demande.Status.DemandeValidation.value) {
 
								var demandeId = parentValues["Id"];
								var gNb = 0;
 
								this.getNbIdentification(demandeId, function (pNb) {
									valid = pNb > 0;
									next();
								});
							} else {
								valid = true;
								next();
							}
 
						} else {
							valid = true;
							next();
						}
					}, function () {
						return valid;
					},
					this
				);
			},			
			getColumnsValues: function(argument) {
				return this.sandbox.publish("GetColumnsValues", argument, [this.sandbox.id]);
			},
           	getNbIdentification: function(demandeId, callback){
				var esq = Ext.create("Terrasoft.EntitySchemaQuery", {
					rootSchemaName: "UsrIdentification"
				});
 
				esq.addColumn("Id");
 
				var esqDemandeFilter = esq.createColumnFilterWithParameter(Terrasoft.ComparisonType.EQUAL, "UsrUsrDemandes", demandeId);
				esq.filters.add("esqDemandeFilter", esqDemandeFilter);
                esq.getEntityCollection(function(response) {
                  	if (response.success) {
        				var entities =  response.collection.getItems();
						if (callback) {
							callback.call(this, entities.length);
						}
                  	} else {
                        if (callback) {
                            callback.call(this, 0);
                        }
                  	} 
                }, this);				
 
			}