Cannot use the values from getCustomFieldValue() in IF Condition

[Shereen]

Hi am new in Jira and I currently working on a script.

I was able to get now the value/s of Sytems custom field since the log.debug outputs the values selected.

However it doesn't proceed in the IF CONDITION. Is there other way so that I can access/use the values of a multiselect custom field?

Here is my code.

def systemField = ComponentAccessor.customFieldManager.getCustomFieldObjectsByName("Systems")
def systemValue = issue.getCustomFieldValue(systemField)

log.debug systemValue

if ("Jira" in systemValue) {

   do something..

}

else ("Bitbuclet" in systemValue){

   do something..

}

 Any suggestions is a great help.