Reloading detail in a freedom ui page

Note that i'add this code in the task script in the process 

var userConnection = Get<UserConnection>("UserConnection");
string messageText = "Successful";

Terrasoft.Configuration.MsgChannelUtilities.PostMessageToAll("ReloadDetail", messageText);
return true;    

i got this error message 
"The type or namespace name 'MsgChannelUtilities' does not exist in the namespace 'Terrasoft.Configuration' (are you missing an assembly reference?"

"The type or namespace name 'MsgChannelUtilities' does not exist in the namespace 'Terrasoft.Configuration' (are you missing an assembly reference?" - this error message will occur in case the business process is created in the assembly package. The only workaround is to uncheck the "Assembly package" property in the package settings or move the process to the regular package.

As for the possibilities and if LiveUpdate is not an option - yes, socket nessage to the client-side and triggering the LoadDataRequest with reload enabled is the only option.