Worldedit Oak Wood Planks

Worldedit commands //wand-to get a wand //undo -undo your last action. //redo- redo your last (undone) action.//set <block> -set all blocks inside the selection region to a specified block. 5:5 dark oak wood plank 7 bedrock 8 water 9 stationary water 10 lava 11 stationary lava 12 sand 12:1 red sand 13 gravel 14 gold ore 15 iron ore 16 coal. //replace 1 5 replaces the stone in the selected area with oak wood planks. //replace 5 leaving the first entry blank, it automatically uses 0 (air), replacing all the air in the selected area with oak wood planks.. I keep trying to use worldedit to get things done quicker but it doesn't work. it says that i lack the permission. i am a legend on sb1. what's wrong....

Worldedit is known for not interfering or stopping the block update. it can change part of 2-block-wide structures like door, piston, or tall plant to air which exploits unique block type. it can change part of 2-block-wide structures like door, piston, or tall plant to air which exploits unique block type.. The color of wood planks available to this point is now only obtainable from oak wood. the original "wooden planks" are now called 'oak wood planks', and each wood planks color is

named with the wood it is taken from.. I'm completely new to world edit and seem to have hit a snag and not sure how to over come it. i'm trying to replace all existing wood planks with the pine wood planks but i only seem to be able to replace with the current wood planks..