How to change language of Required Message in vbcs?

Content

I am using below code to show the required message whose form field value is empty so that on click of Submit Button , error message should come "You must enter a value" by using tracker.showMessages(). But I want to translate this message in respective languages.I have used the below code for translation and giving required="true" message , but it is not working and message is displayed in English Language only in other languages also.

 

PageModule.prototype.showErrorMessages = function(translations)

{

var tracker = document.getElementById("tracker");

if (tracker.valid === "valid")

{ // submit the form would go here

return true;

}

else