Calculated Task Columns

[JoshJa]

I have been working on some Text mode inputs to find the difference between the "Total # of deliverables" & "total # of deliverables completed". {Green Square in image}

My goal is to report on the project status for the "# of remaining deliverables" {Yellow Square in Image}

I have found the article with the function I am trying to include what am i missing from a text mode perspective? 

ARTICLE

[JoshJa · Accepted solution]

Here is the solve that we discovered internally with my team.

displayname=# of Deliverables Remaining
textmode=true
valueexpression=SUB({DE:Total # of Deliverables}, {DE:# of Deliverables Completed})
valueformat=HTML

CALLOUT:

DE: for custom column names

Type fields exactly as shown 

SUB = Difference between fields