DrawTexture call back in 4.7.6

Development Programming & Scripting UI
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1

Hi I am following a guide on how to apply a texture icon when an NPC speaks it says here:

  1. Add a UPROPERTY function (type UTexture2D*) for the NPC’s face texture. Draw the NPC’s face beside its message in the output.

        //you can select face icons to be attached to the NPC’s face in blueprints.
   // Attach a texture to your struct Message:
  //UTexture2D* tex;
 //To render these icons, you need to add a call to DrawTexture() with the right texture
//passed in to it:

    // DrawTexture( messages[c].tex, x, y, messageH, messageH, 0, 0, 1, 1 );

     struct Message

 {
 	FString message;
 	float time;
 	FColor color;
 	UTexture2D* tex;
 	Message()
 	{
 		time = 5.f;
 		color = FColor::White;
 
 	}
 	Message(FString iMessage, float iTime, FColor iColor)
 	{
 		message = iMessage;
 		time = iTime;
 		color = iColor;
 	}
 	DrawTexture(message[c].tex, x, y, messageH, messageH, 0, 0, 1, 1);
	
 };

I’m using 4.7.6. Did they update the callback? Or did i do something wrong?