some questions about MT4's EA and Script

vx0532

Newbie
6 0
Now I want to clear of my questions as below:

1. I want to made an Scripts like this: when I execute it, at the very beginning, it will give me the chance to assign to some parameters used in the Script; after this, the Script will be executed with the updated parameters which were assigned just now completely. How can I achieve it?

2. When I make a Script--"scriptX", shall I make an EA which use this Script(scriptX)? if yes, how?

3. what is the difference between
"extern string My_Name="my name" " and
"string My_Name="my name" " .

Thank you very much.
 
 
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