Hello everyone. Here's a sample I am working on. Everything compiles well when I comment out the display of the variables Time_Start, Time_End, Time_Difference near the end. with Ada.Real_Time; use Ada.Real_Time; with Ada.Text_Io; use Ada.Text_Io; procedure TestTime is -- ---------------------------------------------------------- -- GET THE STARTING TIME, LOOP, GET THE END TIME, SUBSTRACT -- ---------------------------------------------------------- Time_Start : Ada.Real_Time.Time; Time_End : Ada.Real_Time.Time; Time_Difference : Ada.Real_Time.Time_Span; begin Time_Start := Ada.Real_Time.Clock; for I in 1..17400 loop delay 0.003448275862; end loop; Time_End := Ada.Real_Time.Clock; Time_Difference := Time_End - Time_Start; Ada.Text_Io.Put("Start Time: "); Ada.Text_Io.Put(Time_Start); Ada.Text_Io.New_Line; Ada.Text_Io.Put("Start Time: "); Ada.Text_Io.Put(Time_End); Ada.Text_Io.New_Line; Ada.Text_Io.Put("Time Difference: "); Ada.Text_Io.Put(Time_Difference); delay 30.0; end TestTime; * NOW Based on other sample code I've looked, other samples make use if the Real_Time Library, and seem to display fine from what I've noticed, using the same display techniques. But when I compile this code as is. it gives me the following error message "Invalid Parameter List In Call." for the 3 lines that display the three Time variables. Can anyone tell me what is missing in this I just want to display these values (regardless of formatting for now). Thank you all in advance for your help. Stephane Richard Software Developer -- Stephane Richard Software Developer [log in to unmask] Sent through GMX FreeMail - http://www.gmx.net