onValidation.js

import("system.vars");
import("system.result");
import("system.neon");
import("Salesproject_lib");

var SalesprojectUtils = new SalesprojectUtils();

if( !SalesprojectUtils.validateProjectNumber(vars.get("$local.value")) )
{
    result.string(SalesprojectUtils.getProjectNumberValidationFailString());
}