[amibroker] using PARAMFIELD _ HELP needed

["textual_49" <das300@xxxxxxxxxxx>]

below is a prompt to select PH to what it is dragged onto. it defaults
to "close" when dragged onto a PRICE window. 
In my case I want it to Default start at "LOW" not "close" if dragged
onto PRICE. 

HOW CAN I DO THIS ?

 
Ph = ParamField("Price field_high",-1 ) ;

Thanks in advance
maurice






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