Can I make a SCAV possess a specific item with certainty?

I set up a Christmas event in SVM, but the probability is very low and,

only checked for Christmas ornaments from Santa.

I tried to modify the eventLoot side of the seasonalevents.json, but the

“Pockets": {

“5df8a6a186f77412640e2e80": 2100,

“5df8a72c86f77412640e2e83": 2100,

“5df8a77486f77412672a1e3f": 2100

In this way, even probabilities are assigned, but the

How can I modify it to make it possess a definite probability?