are there script cb do files in bf1 ?

[wsa30h]

can i make ascript cb dofile or modify one in bf1 ?

[Dark_Phantom]

ScriptCB_DoFile("luaname") will execute any lua file you have included, allowing you to call in custom lua script functions.

[wsa30h]

how do i set that up ?

[Dark_Phantom]

http://www.swbfgamers.com/index.php?topic=6706.msg71350#msg71350
This is a good example.
I don't think it does what you think it does - essentially, if you write a chunk of lua script that would be better if you could repeat it all the time, you can put it in a function.  Then, using this method, you call it in when you need it rather than copying it in all the time.