Issue in course 1 to complete - incorrect message

<!-Iam getting the issue of Incorrect format even thought i have followed the instructions iam not sure what iam missing

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Hi @SivaLakshmi

make sure your message format is like any of these:

Thanks for the reply - do you mean via fixed message rather using the expression message type

Both should work, just make sure your expression is correct, no extra spaces..etc..