Error parsing parameter '--parameters': Expected: '=', received: 'P' - amazon-web-services

Question

I am working with aws cli cloudformation. While using the JSON parameters file along with yml template, I keep getting the error. I tried using create stack update stack as well as the change set.
Error parsing parameter '--parameters': Expected: '=', received: 'P' for input:
- ParameterKey: FunctionName
^
ParameterValue: taskaplambda
- ParameterKey: MemorySize
ParameterValue: 512
- ParameterKey: Timeout
ParameterValue: 5
Where my command is:
aws cloudformation update-stack --stack-name apstack --template-body file://templates/cflambdatemplate.yaml --parameters file://params/param.json
And my param.json is:
[
{
"ParameterKey": "FunctionName",
"ParameterValue": "taskaplambda"
},
{
"ParameterKey": "MemorySize",
"ParameterValue": 512
},
{
"ParameterKey": "Timeout",
"ParameterValue": 5
}
]
This is my YAML file
cflambdatemplate.yaml
Transform: AWS::Serverless-2016-10-31
Resources:
tasklambda:
Type: AWS::Serverless::Function
Properties:
FunctionName: !Ref FunctionName
Handler: lambda_function.lambda_handler
MemorySize: !Ref MemorySize
Role:
Fn::GetAtt:
- "tasklambdarole"
- "Arn"
Runtime: python3.7
Timeout: !Ref Timeout
CodeUri:
Bucket: taskapbucket
Key: apbuild/lambda_function.zip
tasklambdarole:
Type: "AWS::IAM::Role"
Properties:
AssumeRolePolicyDocument:
Version: "2012-10-17"
Statement:
-
Effect: "Allow"
Principal:
Service:
- "lambda.amazonaws.com"
Action:
- "sts:AssumeRole"
Path: "/"
taskPolicies:
Type: "AWS::IAM::Policy"
Properties:
PolicyName: "root"
PolicyDocument:
Version: "2012-10-17"
Statement:
-
Effect: "Allow"
Action: "*"
Resource: "*"
Roles:
-
Ref: "tasklambdarole"
Parameters:
FunctionName:
Type: String
MinLength: '3'
MaxLength: '18'
MemorySize:
Type: Number
MinValue: '128'
MaxValue: '1024'
Timeout:
Type: Number
MinValue: '1'
MaxValue: '15'
I have been trying this with every possibility, but it keeps giving me an error.

Answer 1

Just able to create everything you needed through aws CLI:
I'm using the same yaml file and json template of parameter and not getting any error. Below is the only change that I did in param.json :
[
{
"ParameterKey": "FunctionName",
"ParameterValue": "taskaplambda"
},
{
"ParameterKey": "MemorySize",
"ParameterValue": "512"
},
{
"ParameterKey": "Timeout",
"ParameterValue": "5"
}
]
You need to convert the Number to String, It's because CloudFormation parameter types don't map to JSON types, so the CLI expects everything to be passed as string.