dojo Script is validating but allowing to save the workitem. How to rectify this.

I had created a validation script in dojo for Enumerationlist(Check list Enumeration). When I select "b" in Arribute of "Testf" then Attribute "Testr" need to become mandotry. I can able to make it as mandatory but when I save the workitem without filling mandotry filed(Testr) it is getting saved. I am not understanding where change the code. Below is my code and when I uncheck "b" then that "*" mark need to go but it is not refreshing automatically. If anyone knows kindly suggest me.

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dojo.provide("org.organization.Validator");
dojo.require("com.ibm.team.workitem.api.common.Severity");
dojo.require("com.ibm.team.workitem.api.common.Status");
(function() {
var Severity = com.ibm.team.workitem.api.common.Severity;
var Status = com.ibm.team.workitem.api.common.Status;
    dojo.declare("org.organization.Validator", null, {
        validate: function(attribute, workItem, configuration) {
var severity= configuration.getChild("parameters").getStringDefault("severity", Severity.ERROR.name);
        var message= configuration.getChild("parameters").getStringDefault("message", "");
    var selectedValues = workItem.getValue("testf");
    var specify = workItem.getValue("testr");
  
   
if(selectedValues!==null){
if(selectedValues!==undefined){

for (var i=0; i < selectedValues.length; i++) {
console.log("-----###--------"+selectedValues[i].label);
if(selectedValues[i].label!=="b"){
console.log("value  --- 111 "+selectedValues[i].label);


return Status.OK_STATUS;

}else {
if((selectedValues[i].label=="b")&&(specify=="")){
console.log("Entered here2");
            return new Status(Severity.ERROR, message);}
        }

}

       
}    }
  



        }
    });
})();

Thank you,

Regards,

Pavanm