diff --git a/Command-Reference.md b/Command-Reference.md
index deb0e83..161890e 100644
--- a/Command-Reference.md
+++ b/Command-Reference.md
@@ -554,7 +554,7 @@ The modify command lets you set the variables for your Multiverse worlds in game
 * monsters - Boolean
 * pvp - Boolean
 * scale/scaling - Double
-* price - How much it costs to enter the world. Enter 0 for free
+* price - How much it costs to enter the world. Enter 0 for free. Enter negative value for debit, positive value for credit.
 * currency/curr - What it costs to enter the world in the form of an Item ID (-1 to use the econ plugin you have installed)
 * respawn - String
   - This value can either be the Name of a world or the Alias of that world. Space CAN be used.