Changing allotted values on parameters based on previously selected values on the parameters CloudFo-CodePudding

I am making a CloudFormation template. I have a situation in which I want to change the parameters allotted values dynamically based on previously selected parameter values.

For example:

If parameter1 allotted values are True and False

parameter2 allotted values are 1,2,3, and 4.

If parameter1 is chosen True then parameter2 allotted values are 1,2,3, and 4 but if parameter1 is chosen False then parameter2 allotted values are 1 and 2.

I want a solution where the allotted values change automatically when the parameter1 is chosen False.

How to do this in CloudFormation?

Thanks in advance.

CodePudding user response：

No, that's not possible. CloudFormation parameters are static and you can't modify the behavior of a parameter based on another parameter.

CodePudding user response：

You could perhaps use Conditions and Conditions Functions:

Parameters:
  MyParam:
    Default: false
    Type: String
    AllowedValues: [true, false]
Conditions:
  MyParamTrue: !Equals 
    - !Ref MyParam
    - true

Then inside resources:

Attribute: Fn::If: [MyParamTrue, [1,2,3], [1,2]]