No, you can't do that, you can't specify a condition, as you can see, you need to specify a specific correspondence, if the field value = is less than 0, then it is highlighted.
I propose to solve the problem like this:
1) Go to the procedures
http://i.imgur.com/LrEDbbJ.png , add a new "Highlight products out of stock"
http://i.imgur.com/UgUOjgR.png2) Open edit actions
http://i.imgur.com/ls3R4yi.png3) Add action
http://i.imgur.com/bQp997M.png4) You should have 2 additional fields for the process product:
- 1st is your balance after shipment
- The second is, so to speak, a switch, which can only have 2 values (we will use numbers - this is how it should be), for example 1 and 2
5) We return to the procedure and configure this way
http://i.imgur.com/mdRRE9r.png6) And the last thing in the product table interface is set like this
http://i.imgur.com/d8WkRk1.pngAnd a small nuance - the "Remainder Fact" field (or whatever you call it), which acts as a condition, must be in the table interface, otherwise the highlight will not work