I have a .sh script and a .json properties file for use with AWS CLI v2 to create a CF Stack. I have a parameters file in JSON that I need to substitute one value, but all th key/value pairs are the same and I cannot figure out how to get it to pick the right one, the variable ENV in defined in the script and the line below is what I need to pass the edited JSON file into. I believe it will also take it s a full String Blob instead of file if that is easier. I was trying jq with no luck but maybe there’s an even easier solution

aws cloudformation create-stack --capabilities CAPABILITY_NAMED_IAM --stack-name $lambda-$env --template-url <url> --output json --parameter $property_file

property_file

[
  {"ParameterKey":"RuleState", "ParameterValue": "DISABLED"},
  {"ParameterKey":"LambdaSchedule", "ParameterValue":"rate(20 minutes)"},
  {"ParameterKey":"EnvironmentParam", "ParameterValue":"$ENV"}, <-- the string I need changed
  {"ParameterKey":"Method", "ParameterValue":"POST"},
  {"ParameterKey":"LambdaName", "ParameterValue":"TestLambda"}
]