I need help about seting go back to default evrytime

Can some one help me evrytime i seting my alc per optic its always back to default 😭😭 i use 4/2 linier and seting alc per optic 3.2/3.4/3.6/3.8/4.0/.4.0.4.0 after i turn of alc its going back to default again and again if i use 4/3 its to slow same if i use 4/4 littlebit faster can some one help me??