unable to place order

 
Sir,I\'ve a demo account but I cannot sell.Whenever I give a sell order it shows please verify operation parameters and try again later.I am novice please guide.
 
Show your code and Print the values to SendOrder plus Bid and Ask. No mind readers here.
 
I can't place an order it says please verify operation parameters and try again later. 
 
Nathi Makoe #: I can't place an order it says please verify operation parameters and try again later. 

Do you really expect an answer? There are no mind readers here and our crystal balls are cracked. Always post all relevant code (using Code button) or attach the file.
     How To Ask Questions The Smart Way. (2004)
          Be precise and informative about your problem

We can't see your broken code.