map function is no longer in terraform

[babyhuey]

╷
│ Error: Error in function call
│ 
│   on .terraform/modules/camellia-image/main.tf line 360, in resource "aws_codebuild_project" "packer":
│  360:     for_each = local.is_vpc_provided ? map(var.vpc_id, var.subnet_ids) : {}
│     ├────────────────
│     │ var.subnet_ids is list of string with 3 elements
│     │ var.vpc_id is "vpc-xxxxxxxx"
│ 
│ Call to function "map" failed: the "map" function was deprecated in
│ Terraform v0.12 and is no longer available; use tomap({ ... }) syntax to
│ write a literal map.
╵
ERRO[0039] 1 error occurred:
        * exit status 1

I tried just changing to tomap but that did not work

[babyhuey]

tomap error:

╷
│ Error: Too many function arguments
│ 
│   on .terraform/modules/camellia-image/main.tf line 360, in resource "aws_codebuild_project" "packer":
│  360:     for_each = local.is_vpc_provided ? tomap(var.vpc_id, var.subnet_ids) : {}
│     ├────────────────
│     │ var.subnet_ids is list of string with 3 elements
│     │ var.vpc_id is "vpc-0bf8b798434eb3961"
│ 
│ Function "tomap" expects only 1 argument(s).
╵
Releasing state lock. This may take a few moments...
ERRO[0039] 1 error occurred:
        * exit status 1