Is it possible to have different tasks per branch rather then having to have different jobs per branch say one branch requires a argument that tells it to upload to a different part of the maven.
No, you would need a dfferent plan.
But... you could also inject variables and depending on the variables have you scripts execute different tasks (controlled outside of Bamboo)
I'm not sure how different are the tasks that you're planning to run. "upload to a different part of the maven" seems to be possible only by using variables on the plan/branch level. So you define plan variable mavenLocation set it on the plan level to maven-location-x, while on the branch you can set it to maven-location-y. Then your upload task can refer to such variable with ${bamboo.mavenLocation}.
mavenLocation
maven-location-x
maven-location-y
${bamboo.mavenLocation}
As the last resort you can follow this approach: you can make your plan produce JAR artifact. Then use Deployment Project to actually upload artifact to maven. You can define multiple deployment projects, each for the branch of your plan to automatically deploy to different locations in maven.
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