st: 3 different categorical variables same graph

[Marcos Vinicius <bioestatistico@inbox.com>]

Hello,
I am trying to generate a bar chart where I have 3 different categorical variables (var1,var2,var3)  on the X-Axis (Var 1 to Var 3 in the example below, letters identifies categories. The bar represents the proportion of the distribution.
I have tried graph bar and catplot without success.  
catplot   var1 var2 var3,     ascategory percent blabel(bar, position(outside) format(%9.1f)) bargap(20)  vertical
graph bar    var1 var2 var3,    asyvar  bargap(20)       blabel(bar,position(outside) format(%4.2f))
Please any help will be apreciate.
Vinicius
           proportion
> 	___
> 	| |
> 	| |			___		___
> ___	  |	
> 	| |		___	| |		| |
> | |	  |	
> 	|		| |	| |		| |		___
> ___	| |		 
> 	|	___	| |	| |		| |	___	| |
> | |	| |	___ 
> 	|	| |	| |	| |		| |	| |	| |
> | |	| |	| | 
> 	|	| |	| |	| |		| |	| |	| |
> | |	| |	| | 
> 	|	| |	| |	| |		| |	| |	| |
> | |	| |	| | 
> 	|	| |	|D|	|E|		|F|	|G|	|H|
> |A|	|B|	|C|
> 	
> --------------------------------------------------------------------------
> 			Var	2			Var	3
> Var	1

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