Im unable to start a Port Forwarding Session To Remote Host (or simply remote session) on a fargate ecs container, yet can do so on an instance. Using AWS console (thats the website based and not shell based) I cant seem to figure out what settings are needed.

Working (instance remote session):

aws ssm start-session 
--target i-{instance} 
--region {region} 
--profile {profile} 
--document-name AWS-StartPortForwardingSessionToRemoteHost 
--parameters '{"portNumber":["22"],"localPortNumber":["9999"],"host":["{host}"]}'

Not working the same on on a conatiner:

aws ssm start-session 
--target ecs:{clusterName}_{taskId}_{containerRuntimeId} 
--region {region} 
--profile {profile} 
--document-name AWS-StartPortForwardingSessionToRemoteHost 
--parameters '{"portNumber":["22"],"localPortNumber":["9999"],"host":["{host}"]}'

Any idea?

I even created a iam policy and attached to the iam roles that run the specific service and tasks inside ecs cluster.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "ssm:StartSession",
                "ecs:ExecuteCommand"
            ],
            
            "Resource": [
                "arn:aws:ecs:blablabla:cluster/{myCluster}",
                "arn:aws:ssm:blablabla::document/AWS-StartInteractiveCommand",
                "arn:aws:ssm:blablabla::document/AWS-StartPortForwardingSession",
                "arn:aws:ssm:blablabla::document/AWS-StartPortForwardingSessionToRemoteHost"
            ]
        }
    ]
}