Advanced parameter store sharing parameters

Hi, I am want to try to use Advanced parameter store sharing parameters. I added to RAM an org sharing, also created an advanced parameter. My lambda in the member account still can't access it?

Error: Error: An error occurred (ParameterNotFound) when calling the GetParameter operation:

import boto3

def lambda_handler(event, context):
    # Initialize the SSM client
    ssm = boto3.client('ssm')
    
    # Specify the name of the parameter in Parameter Store
    parameter_name = '/test/shared'
    
    try:
        # Get the parameter value
        response = ssm.get_parameter(Name=parameter_name, WithDecryption=True)
        parameter_value = response['Parameter']['Value']
        
        # Print the parameter value
        print(f"Parameter value: {parameter_value}")
        
        return {
            'statusCode': 200,
            'body': f"Parameter value: {parameter_value}"
        }
    except Exception as e:
        # Print any errors that occur
        print(f"Error: {e}")
        
        return {
            'statusCode': 500,
            'body': f"Error: {e}"
        }