How to use the Text Dependancy for a procedure fired when Player Chats

I am trying to make 2 achievements that are given when a player says a specific thing. So I made a procedure that is fired when a player chats. In the dependencys we have a text aka what the players message was. However there is no way to get the variable block. If I change it in the code and don't lock it. Mcreator just changes it to the previous version before the edit. I am using the latest beta