Added a note that debugging must be turned on before sourcing ticktic…

…k.sh.

README.md

@@ -62,7 +62,7 @@ Miscellaneous
  * Clear all variables: You can erace any JSON you have created/imported with the `tickReset` routine.
 
 #### __tick_var_debug - See the interim bash code
- * Dry run (display compiled code): TickTick is a mini-compiler that emits bash. If you declare `export __tick_var_debug=1` at the top of your code, then the code will not run but instead print what it would have run.
+ * Dry run (display compiled code): TickTick is a mini-compiler that emits bash. If you declare `export __tick_var_debug=1` at the top of your code (before you source ticktick.sh), then the code will not run but instead print what it would have run.
 
 Bash variables ($) in JSON
 ---