Rule to Create Sub Task - Then name sub task based on parent task

Welcome to the Asana Community Forum @Nathan_Dennis :wave:

This should not happen as the variable always pulls over the task name.
Now one thing I recommend to check is the trigger. Because let’s say for example if the trigger is “new task added” and you are creating a task and still updating that the rule might already fire and create the subtasks.
I have tested this and yes if you do not have the task name added yet, but the rule already run then it would add “[no value]”

Can you maybe share some more info about your current set up such as screenshots (blur personal info)

Your idea of subtasks is definitely a great one. Another good solution was shared here