Strife Dialogue with custom monsters

Hey there, I'm working on a dialogue script with ally monsters.
Problem is, it seems to not work on custom monsters...

I have setup a conversation with a marine from a package I downloaded on Realm667, and called his name as I usually do : actor = "MarineAllyMG";.
But when I come to press use on him, nothing happen. I also tried to give him a conversation ID and called him with the ID : ID = 1;
Still nothing.

I have tried with a basic actor and choose ScriptedMarine in the Marines section in Things, and it works when I call his name.
I don't understand exactly what I should do to make the system recognize my custom actor so I can engage conversation with him ...

Here a piece of the dialogue script :

Code:

namespace = "ZDoom";

conversation
{
   //Armorer dialog
   actor = "MarineAllyMG";

   //Introduction page
   Page
   {
      name = "\cdAndy the armorer\n";
      Dialog = "\cnWelcome to the base \cdDoomSlayer \cn! What can I do for you ?";
      goodbye = "\caSee ya.";
      Choice
      {
         text = "\ckTell me about your shop.";
         NextPage = 2;
      }
      Choice
      {
         text = "\caI already know everything, thanks !";
         NextPage = 6;
      }

   }

Well finally found the solution, there are flags in the DECORATE lump that prevent dialogue to run, so I removed one by one to see wich one is the problem, and now the script runs well

What was the flag or flags which caused the problem? (Just in case someone runs into the same problem and wants a solution).