Set subitem dependency upon sub-item creation


I’m trying to setup some automations to create a set of subitems when an item is created in a board. That part works. My issue is that I cannot populate the dependency column in the subitem creation. What I’m looking for is to predetermine the dependency upon the creation of the sub-item since each sub-item will always be dependent on a predetermined sub-item that was also just created so that when the dates are added it will update the dates of the following sub-items if the date is changed. From what I can tell, I cannot make anything dependent on something that is not created yet. That is fine, and I understand why, but I would love it if I could set something up to make dependent on the sub-item as it’s created or to pull from a template that would already have the sub-items dependencies setup. Any ideas?