am tryingto see eur/usd when i use the indcator spread diff it tell me data is missing as i think it need 2 data to get the diffrent.
Yes, that's correct. The "Spread - Diff" indicator needs two data series applied to that chart. So if you add the Bid as data series one, and the Ask as data series two, you can calculate the (absolute) spread between them.
Btw, in your second post you want to achieve something different than you stated in your first post:
hi i want to see the difference between the bid and ask price on the chart or any where on the multichart program and if possible i can add the fees for each trade.
well am trying to get the spread the cost of each time ibuy or sale.
This difference is significant in terms of coding. In your first example, you'll be looking at an indicator that calculates the spread including commission from MB Trading. In the second example, you'll calculate the spread only when you have opened an position (added with the commission for that position?). And in this second example, you want to "get" the spread, which suggests to me that that is something different than plotting a value (i.e. where do you want to "put" that retrieved data?).
(Note that the commission for MB Trading is different depending on which order (limit or market) you use.)
To borrow a line from TJ
: do you have a flowchart? What do you want to achieve?
Regards,
Josh