Can only one mod add to additional structure engrams

i have tweaked two items in ark and i can get them both to work by them selfs but if i enable both only one show up to be crafted in the fab am i doing somethign wrong or can you not have two mods addign egrams to the fab ?

Inside your “PrimalGameData_BP…” locate the “Additional Structure Engrams” (about halfway down) and add an element by clicking the plus sign. Then make sure you add the fabricator to the “for class” slot… Then under the class additions add 2 elements and identify each of the items your want to be present. This should add the 2 new items as engrams to the existing fabricators options, or those present from another mod.

Edit: I don’t think I understood your question right as it isn’t what the topic says. Are you wondering if two separate mods can each add their own item to the craft list of the vanilla fabricator? or one mod providing two items by itself?

can two separate mods can each add their own item to the craft list of the vanilla fabricator?

They should be able to if they were each implemented as I stated above.