Perspective dynamic dropdown with translation required

I search a way to be able to add translation into a dynamic dropdown. I have create UDT for some units and I want to be able to translate the “Engineering unit”. I have tried to use translation function in binding but not works. Have you tricks for me?

{view.custom.unit_udt_path} + "/Area"

def transform(self, value, quality, timestamp):

	nodes = system.tag.getConfiguration(value, True)
	for item in nodes:
	    for key, value in item.iteritems():
	        if key == 'tags':
	            for tagConfig in value:
	                arr.append({"value":tagConfig["name"], "label":tagConfig["engUnit"]})  #I want my label to be translate
	return arr