How to resolve Script1639998894212 missing

Product Forums Katalon Studio
,
1

I make script for hamdling date spinner, i use script from topic before, but I have error reason like:
groovy.lang.MissingPropertyException: No such property: month for class: Script1639998894212

script:
Mobile.sendKeys(findTestObject(‘Object Repository/MenuMatching/TglLhairTgl’,[(‘month’):month]), ‘Sep’, FailureHandling.STOP_ON_FAILURE)

Please help for resolve this error

Thanks
Insan