ses cross account

I am trying to setup ses cross account and yet it seems when I call the lambda function it calls the local ses. The ses I want to use has verified my domain and has granted the authorization for other accounts to access it. however when I run the lambda function it seems to use the local ses setup which is sandbox and therefore I get an error that my to email is not verified. here is my lambda code:

import boto3 from botocore.exceptions import ClientError

def lambda_handler(event, context): # Create a new SES resource and specify a region. client = boto3.client('ses',region_name="us-east-2")

# Try to send the email.
try:
    #Provide the contents of the email.
    response = client.send_email(
        Destination={
            'ToAddresses': [
                '<HIDDEN>@<HIDDEN>.com',
            ],
        },
        Message={
            'Body': {
                'Html': {
                    'Charset': 'UTF-8',
                    'Data': 'This email was sent with Amazon SES.',
                },
            },
            'Subject': {
                'Charset': 'UTF-8',
                'Data': 'Amazon SES Test',
            },
        },
        SourceArn='arn:aws:ses:us-east-2:<HIDDEN>:identity/<HIDDEN>.com',    #I got this ARN from the central SES account I want to use
        ReturnPathArn='arn:aws:ses:us-east-2:<HIDDEN>:identity/<HIDDEN>.com', #I got this ARN from the central SES account I want to use
        Source='foo@<HIDDEN>.com',
        ReturnPath='foo@<HIDDEN>.com'
    )
# Display an error if something goes wrong.	
except ClientError as e:
    print(e.response['Error']['Message'])
else:
    print("Email sent! Message ID:"),
    print(response['ResponseMetadata']['RequestId'])