Question7Replies824Views kanam Member since 2012 58 posts ServiceNow Posted: 2 years agoLast activity: 2 years ago Closed Solved Some .NET Framework components cannot be found with "Choose Items"One of our customers is inquiring why some .NET Framework components cannot be found with "Choose Items" in Toolbox area.For example, Dictionary class in System.Collections.Generic namespace cannot be found in "mscorlib, Version=18.104.22.168" or in "mscorlib, Version=22.214.171.124", though it definitely exists in mscorlib.dll.Any points to be noted to this question?**Moderation Team has archived post**This post has been archived for educational purposes. Contents and links will no longer be updated. If you have the same/similar question, please write a new post. Robotic Process Automation SR Created ×Close popoverFacebookTwitterLinkedinEmail Copy Link Copied! Moderation Team has archived post This thread is closed to future replies. Content and links will no longer be updated. If you have the same/similar Question, please write a new Question. Posted: 2 years agogrona PEGA replied to kanamYou might need to ensure that the framework that you're trying to reference exists on the machine. Posted: 2 years agokanam ServiceNow replied to gronaAccording to the following URL, .NET Framework 2.0 or later contains the Dictionary class:https://msdn.microsoft.com/en-us/library/x8bctb9c(v=vs.110).aspx?cs-save-lang=1&cs-lang=csharp I tried specifying Assembly path to point .NET Framework version 4.6.1's mscorlib.dll as follows: C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\mscorlib.dll But the Dictionary class cannot be found here. Probably I'm missing something. Could we know how to navigate to the Dictionary class in this case? Posted: 2 years agojeffbadger PEGA replied to kanamWhen you go to the Pega Robotics Static Members tab you get only static methods. A Dictionary requires an instance. To create an instance of the Dictionary class use the Add Constructor for Type on the toolbar. Posted: 2 years agoUpdated: 10 months agokanam ServiceNow replied to jeffbadgerThank you. I've finally got what you said. Have created the movie file just for the other people's reference. Its included in the attachment. ***Moderator Edit-Vidyaranjan: Removed Box url and updated content*** Posted: 2 years agokanam ServiceNow replied to kanamAfter adding the Dictionary to the Automation as in the movie, every operations such as adding Properties or Methods results in the errors such as: "Object reference not set to an instance of an object.": "Value cannot be null. / Parameter name: key": How can we make use of this Dictionary component? Posted: 2 years agokanam ServiceNow replied to kanamHave filed SR-B95600. Accepted Solution Posted: 2 years agoMarissaRogers MOD replied to kanamUpon reviewing the associated SR, it was discovered that upgrading to 8.0.1096 has resolved this. If you have a similar issue, please upgrade your software. Thanks!