0.11.0 - Slider skin modification

[Itanium]

I was trying to modify the system region auto switch of memory/storage card from 2 item to 3 items with following code

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if,var,var17,,=,0      
jumpregion,2,0      
storevar,var17=1    
else                  
if,var,var17,,=,1    
jumpregion,2,100
storevar,var17=2
else                
jumpregion,2,200
storevar,var17=0
endif
endif                  


As you can see, I nested an if in the else of outer if for that but with this construct the 'jumpregion,2,0' was not executing successfully and was behaving strange. I suspect only this one line was executing successfully because the rotation cycle was successful from page 100 to 200 to [blank] to 100 and so on (means var17 was getting values 0 1 and 2 repetatively).

Am I missing some point here?

Though I have acheived the 3 step rotation with ...

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if,region,2,0            
jumpregion,2,100    
else                    
if,region,2,100      
jumpregion,2,200
else                
jumpregion,2,0  
endif                
endif                    


but what is the mistake in first if else construct?