Null reference exception in_TrasactionItem.SpecificContent("SampleKey").toString

[Simzikon (Tim Teymurov)]

Hello There.
I created a queue in orchestrator using “Upload Items” feature. All items are displayed properly in queue manager, but for some reasons robot keeps throwing Null Reference exception. For example, I have an IF activity, Condition is in_TransactionItem.SpecificContent(“ISACTIVEE”).ToString = “Active” .
ISACTIVEE field is populated. I tried in_TransactionItem.SpecificContent.Keys.Contains(“ISATIVEE”) but it still just throwns an exception