Available to back (or lay)

How do I find the amount that is available to back (or lay) at the current price?

In the screenshot you can see that the available back money at the current price (1.44) is £107.  What is the variable name for that?

It's back_amount 

Hi
That will be back_amount for best back price or lay_amount for best lay price

you can also use:
b_offered_{price} or l_offered_{price} to see what is available at any specified price
e.g. is your screenshot b_offered_1.41 will return 487.00
for this variable to work, in the settings, retrieve all price offers must be on  

Nice one guys. Thank you very much