'SymbolInfoDouble' - no one of the overloads can be applied to the function call

 
how can i solve this

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sohorab hossain:
how can i solve this


Next time, post your code not as screenshot, but properly, by using the >Code-Button<.
 
  1. Never show your code as a screenshot. Insert it properly in your post using the CODE button (Alt-S).

    Code button in editor

  2. The property SYMBOL_DIGITS returns an integer, not a double. Use SymbolInfoInteger() instead.
Reason: