missing ; or incomplete statement

missing ; or incomplete statement

Hi team, 
I am writing a sample custom function to invoke a thirdparty url, but getting error such as missing ; or incomplete statement.
Pls suggest.

vResponse = invokeUrl
[
type : POST
parameters : {"Request ID":"12345","Subject":"Test", "Requester":"Tester1", "Status":"New"}
connection : "testconnectionlink"
];
return true;

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