Displaying Logic timer as h:m:s

I want to display a logic timer value on a colour touch screen in Hours Minutes and Seconds.
Can anyone help with the required code procedure.
Note sure if I need to use DecodeTimer and user I/O

 

Create a user systemIO string called say TimeString;
Put a level component on the page and select the system io as its value
Logic:

Code:

Global variables:
 ourTime: integer;
 timeString: string;

Module: 

if timerTime(1) <>  ourTime then
begin
  ourTime:= timerTime(1);
  durationToString(ourTime, timeString);
  SetStringSystemIO("timeString", timeString);
end;

 

Thanks Ashley
I just had to change

SetStringSystemIO("timeString", tempStr1);
To
SetStringSystemIO("timeString", timeString);

Works well and I can build on this.

Thanks again

John

 

Sorry. Just a typo. I have a number of temporary variables set up to test out logic and then change them to something meaningful when I post it. I've edited the post for future reference.