TypeError : Expected IEnumerable[Category] , got Category

[Deniz_Maral]

Take a look here:

Filter Rule non String

Gotcha! [image] The first BIP LEVEL_PARAM didn’t work, it needs the 2nd… I’ll have to run some kind of check… pId = ElementId(BuiltInParameter.SCHEDULE_LEVEL_PARAM) sRule = ParameterFilterRuleFactory.CreateEqualsRule(pId, level.Id) fRule = ElementParameterFilter(sRule) #Do some action in a Transaction TransactionManager.Instance.EnsureInTransaction(doc) for name,cat in zip(filtNames,cats): paraele = ParameterFilterElement.Create(doc,name,catids) paraele.SetElementFilter(fRule) Parafilel…