METHOD 1 - TIBCO Statistica Workspace

Solution 1
When working with TIBCO Statistica workspaces, once we have the data set imported, we should be able to transfer the case name to a variable by using Transformations of Variables Node:

Once you import this node to your workspace containing the data set, connect it, open the cog wheel of the node to edit the parameters and click on "Edit parameters" button to set the variable that needs to be updated with Case Names. Formula would go as follows: "Name=CaseName"



Solution 2 
Alternative method would be to use Rules Builder node and create a rule that will do this for us:


Here, in the parameters of the rules node make sure that you selected the Input Variables to copy to the output table:


Please note: Workspace with demonstrated methods is attached. 

METHOD 2 - TIBCO Statistica Interactive Mode

Solution 1
When working with spreadsheet interactively, there is the possibility to transfer the case name to a variable by using the function "Names" (case Names manager) in Data|Names|Case Name Manager:



Solution 2
Alternative solution would be to add a variable and define the formula. Once you have your data set opened, go to Data|Variables|Add... set the Variable name, i.e. "Names", it the formula section add Names=CaseName or V1=CaseName formula and click OK.