Cloudformation condition on parameter in Role policy - amazon-web-services

Question

I am creating iam role and its managed policy. In managed policy I want to give allow access to invoke API(Gateway). This template is going to execute on at least 6 environments I want to use condition based approach to assign API gateway url in resource so that template will be easy to maintain and execute.
Based on type of environment API url is going to change.
AWSTemplateFormatVersion: 2010-09-09
Description: >-
This template creates Role and policy
Parameters:
envname:
Type: String
Description: Enter envname
AllowedValues:
- dev
- dev2
- sit
- uat
- prf
- prod
prodaccountid:
Type: String
Description: Enter Prod AccountID
Resources:
DeviceRole:
Type: 'AWS::IAM::Role'
Properties:
RoleName: 'DeviceRole'
MaxSessionDuration : 43200
AssumeRolePolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Principal:
AWS: !Join ["",[!Sub 'arn:aws:iam::${AWS::AccountId}:role/',!Ref envname,'_Role']]
Service: lambda.amazonaws.com
Action:
- 'sts:AssumeRole'
- Effect: Allow
Principal:
AWS: !Sub 'arn:aws:iam::${AWS::AccountId}:user/test-user'
Service: lambda.amazonaws.com
Action:
- 'sts:AssumeRole'
DevicePolicy:
Type: 'AWS::IAM::ManagedPolicy'
Properties:
Description: >-
This Policy will be attached to the device role
ManagedPolicyName: !Join
- ''
- - 'DeviceConnectPolicy'
PolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Action: 'execute-api:Invoke'
**Resource:
- !Join ["", [!Sub 'arn:aws:execute-api:${AWS::Region}:',!Ref prodaccountid,':aaaaaaaaaa/Test/PUT']]
- !Join ["", [!Sub 'arn:aws:execute-api:${AWS::Region}:${AWS::AccountId}:bbbbbbbbbb/*/PUT/*/*/*/v2']]
- !Join ["", [!Sub 'arn:aws:execute-api:${AWS::Region}:',!Ref prodaccountid,':cccccccccc/*/PUT/v2/s']]
- !Join ["", [!Sub 'arn:aws:execute-api:${AWS::Region}:${AWS::AccountId}:dddddddddd/*/PUT/*/*/*/v2']]**
Roles:
- Ref: DeviceRole
I want to use conditions in Resource.
Thanks in advance