Unable to create trigger using pub.trigger:createTrigger

I am trying to create a trigger in a flow service by using the service pub.trigger:createTrigger, but getting the error:

[INDENT]Could not run ‘createTrigger’.

[INDENT]com.wm.app.b2b.server.ServiceException: [ISS.0098.9083] Unable to create trigger “TestTrigger”. Invalid Trigger Name.[/i]

unable to understand why it is saying “Invalid Trigger Name”

Has anyone encountered this error before?
Developer and IS version 8.

Sorry, missed this info from the Integration_Server_Built-In_Services_Reference:

[INDENT]triggerName – String – Fully qualified name for the new trigger that uses any combination
of letters, and/or the underscore character. Make sure to specify the name
of the folder and subfolder in which you want to save the trigger.

Problem solved.

ssagar it means that u need to specify the folder,subfolder name in order to create a trigger .
example folder.subfolder:triggername so that it create trigger remember not to write the package name there in the next package variable write the package name .