I'm looking for a way to cancel a "batch" of process instances.

@bryant.st Though there has been a change in the version, I don't think there will be a problem as the basic API functions won't change that frequently. You too can come to a conclusion by inspecting the plugin code and it's quiet simple.

I have an experience of rigorously using this plugin on 7.10 and there aren't any issues till date.

If you want to explore additional options, please take a look at the following:
1. Comments made by Nick Vigilante at https://forum.appian.com/suite/tempo/entry/e-168825. This is completely an OOTB approach and you don't need to worry about the compatibility, as we do in the case of plugin.
2. Second point mentioned by @chetany at https://forum.appian.com/suite/tempo/entry/e-164406. This was just an idea and you could have an idea of your own.

@bryant.st Though there has been a change in the version, I don't think there will be a problem as the basic API functions won't change that frequently. You too can come to a conclusion by inspecting the plugin code and it's quiet simple.

I have an experience of rigorously using this plugin on 7.10 and there aren't any issues till date.

If you want to explore additional options, please take a look at the following:
1. Comments made by Nick Vigilante at https://forum.appian.com/suite/tempo/entry/e-168825. This is completely an OOTB approach and you don't need to worry about the compatibility, as we do in the case of plugin.
2. Second point mentioned by @chetany at https://forum.appian.com/suite/tempo/entry/e-164406. This was just an idea and you could have an idea of your own.