I built a rule in 2.0.9 and I went back into it after updating to 2.1.0 and I get the following error:
app:26332019-05-23 10:36:49.499 pm errorgroovy.lang.MissingMethodException: No signature of method: java.lang.Double.getAt() is applicable for argument types: (java.lang.Integer) values: [0] Possible solutions: getAt(java.lang.String), next(), putAt(java.lang.String, java.lang.Object), wait(), grep(), getClass() (selectActionsTrue)
Here's the rule: