Opensea Properties Percentage


I fighting since weeks with the same Problem: My Collection on Opensea show only „New Trait“ and not „ X% have this trait“…

I heard from another user, that he found a solution but its not sharing the solution….
He just said he set the min/max Quantity to 1/1 each NFT on his 10k Collection on the Smart Contract / Minting NFT…

Anyone know the Code for that?