Ha didn’t know about the ampersand thx @sylumer
i tried this
omnifocus://x-callback-url/add?name=[[title]]¬e=[[body]]&target=/task//Home/Garden
yet it still dosent work and gives the same error:
also tried @Andreas_Haberle suggestion
omnifocus://x-callback-url/add?name=[[title]]¬e=[[body]]&target=/task/iAOLNzVWrPI
but that also gave me the same error