The node "contains" (text array) always return false in packaged game

Hi there,

I have a simple but weird problem with the “contains” node:

To make it short, I have a dungeon with procedural rooms loaded in level streaming, each room has an ID and knows the IDs of adjacent rooms.

I tried to use the node “contains” to check if x room was indeed a parent of y room.

In editor: works fine, no problem. In packaged game: impossible to make it work, the “contains” node always returns false.

As you can see on my screenshot, the solution is simple: instead of using the “contains” node, I just did a for each loop.

My question is just: why? What is the technical reason behind this?

Thanks a lot!