This will take a list , testlist, and verify that each of its elements are unique elements. 
 
testlist := a : b : c : d : e; 
 
X := @Elements( testlist ); 
Y := @Elements( @Unique(testlist) ); 
 
 
@If( X = Y ; @Prompt([OK];"No Dups";"") ; @Prompt([OK];@Text( X - Y ) + " Dups";""))
  
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