| 
 Since fields cannot be added to the ParamField() you may need to add a few lines of code to create your own: 
  
PA = ParamList("Price Array","O|H|L|C|(O+H)/2|(O+H+L+C)/4",3); 
  
if(PA == "O" ) PriceArray = O; 
else if( PA == "H" ) PriceArray = H; 
else if( PA == "L" ) PriceArray = L; 
else if( PA == "C" ) PriceArray = C; 
else if( PA == "(O+H)/2" ) PriceArray = (O+H)/2; 
else if( PA == "(O+H+L+C)/4" ) PriceArray = (O+H+L+C)/4; 
  
Plot(C,"",1,128); 
Plot(PriceArray,PA,colorRed,styleLine); 
  
best regards, 
herman 
  
For tips on developing Real-Time Auto-Trading systems visit: 
http://www.amibroker.org/userkb/ 
  
Monday, December 31, 2007, 3:46:54 PM, you wrote: 
  
> I saw that function but don't know how it applies to this topic? 
  
> Bill 
  
  
>>I don't think you can add fields however you can create your own list 
>>using ParamList() and on if(). 
  
  
>>herman 
  
>>Monday, December 31, 2007, 12:49:27 PM, you wrote: 
  
  
>> Is there a way to add options to the default list of fields for 
  
>> ParamField.? 
  
  
>> I want to have the average price (H+L)/2 available. 
  
  
>> I found a workaround by creating a formula that plots (H+L)/2 with the 
  
>> styleNoLine flag and put it on the chart before any indicators but it 
  
>> would be nice to be able to add fields directly to the option list. 
  
  
>> Bill 
  
  
  
  
  
  
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