Draw a horizontal line of a price level

Hello,

 

What custom action – command do I have to use for an EA to draw a horizontal line at a specific price level defined by a variable, which is also updated when the price changes?

 

For example in the Then section I could have:

 

Assign Variable:

Var1 = Hight[1]

 

Custom Action:

Command: [draw line at price Var1]

 

Kind Regards,

Ben

ObjectCreate("Highest", OBJ_HLINE, 0, Time[0], Highest);
ObjectCreate("Lowest", OBJ_HLINE, 0, Time[0], Lowest);

However it seems that they fail to update. The Highest and Lowest are price variables.

Figured that out as well by using

 

ObjectMove(0, "Highest", 0, 0, Highest);
ObjectMove(0, "Lowest", 0, 0, Lowest);