Greetings!
As mohamed stated, creatin a Rule with the field condition would be the best approach.
Finish your first workflow once the item starts, and then add a Rule to continue execution in a separate workflow when resolution is changed. This would also help with atomization and making sure you don't end up with a beefy, hard-to-debug workflow.
Another good approach would be creatin a workflow with a timer function that loops over the resolution field, and add it in your original workflow, although this solution is far from ideal.
Cheers!
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Pol Estecha Hernández
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