Slot values are not getting set in custom action

Hi All, I am trying to set slot values of type text through my custom action but it is apparently not getting set when that action is run.

Custom action snippet:

class ActionCheckFilePublishName(Action): def name(self): # type: () -> Text return “action_check_file_publish_name”

def run(self, dispatcher, tracker, domain): 
    mes = (tracker.latest_message)['text']
    if "ccla" in mes or "phe" in mes:
        SlotSet('file_publish_name_present','set')
        dispatcher.utter_template("utter_file_notpublished_1")
        return []
    else:
        SlotSet('file_publish_name_not_present','set')
        dispatcher.utter_message('Are you talking about PHE/CCLA file? yes/no')
        return []

class ActionFilePublishNextUtteranceMoodConfirm(Action): def name(self): # type: () -> Text return “action_file_publish_next_utterance_mood_confirm”

def run(self, dispatcher, tracker, domain): 
    name_present = tracker.get_slot('file_publish_name_present')
    name_not_present = tracker.get_slot('file_publish_name_not_present')
    if name_present is not None:
        dispatcher.utter_template("utter_file_notpublished_2")
        return[]
    if name_not_present is not None:
        dispatcher.utter_template("utter_file_notpublished_1")
        return[]
    else:
        dispatcher.utter_message("Sorry, I didn't understand that!")
        return

Slot snippet:

slots: file_publish_name_present: type: text file_publish_name_not_present: type: text

But still slot values are none. is there any other way of doing it or am i doing something wrong? Please help

if you want to set a slot with your custom action, it should return [SlotSet(...)], please take a look at the example in docs: Actions