Logic of Player movement

Hi there, I've been looking at Imagepacker - http://homepage.ntlworld.com/config/imagepacker/ and it is really good. I got a small character who has 2 image in a 'pack'. He has a standing animation and a running animation, I'm getting stuck on the logic behind this, and wondered if anyone could help.

Here is my bit of code

	If count Mod 6=0
		PositionSprite hero_sprite,hero_x,hero_y,hero_sprite\frame+1
	EndIf
	
	If KeyDown(205) Then 
		hero_x=hero_x+1 
		hero_change=hero_change+1 
		hero_walk=hero_walk+1
	EndIf
		
	Select hero_change
		Case 1
			If hero_walk=1 Then ChangeSprite hero_sprite,"hero_walking_frame_final" 
			
		Default
			If hero_walk=1 Then ChangeSprite hero_sprite,"hero_standing_frame_final"
			hero_change=0
			hero_walk=0
	End Select

My logic is flawed here with the changesprite, and I wondered what many people do when they want to change the character animation, when clicking on the right cursor.

Any help would greatly be appreciated

Many thanks