Custom Function Using Column As Parameter - powerbi

Question

I have a custom function created in the Power Query Editor that accepts two parameters. One parameter should be dynamic based upon the value in a column. When tested with static parameters, the function works correctly as far as using a static parameters goes. However, if the table column is supplied (to provide the dynamic value needed), it produces a cyclical error. The function is invoked using "Invoke Custom Function". The first parameter selects a field, while the second parameter is set statically.
The Invoke Custom Function that produces a correct result:
= Table.AddColumn(#"Rounded Up", "qryProjectedDate", each qryProjectedDate(5, -1))
The Invoke Custom Function that produces an error:
= Table.AddColumn(#"Rounded Up", "qryProjectedDate", each qryProjectedDate([RemainingBudgetDays_RndUp], -1))
The qryProjectedDate:
(TotalLoops as number, Loop as number) =>
let
CurrentLoop = Loop + 1,
output =
if Calendar[IsWorkDay]{CurrentLoop} = 1
then
(if CurrentLoop = TotalLoops - 1
then Calendar[Date]{CurrentLoop}
else #qryProjectedDate(TotalLoops, CurrentLoop))
else #qryProjectedDate(TotalLoops + 1, CurrentLoop)
in output as date
This function produces a stack overflow error and a cyclical error messages.
Further testing of just inputting the column value as a parameter and returning that same value produces the value that I would expect. Therefore, I believe my issue is in how I have written the power query M function.

Answer 1

if function(5,-1) works then using function([column1],-1) will also work if column1 contains a numeric five
Are you sure the column is named RemainingBudgetDays_RndUp ? Spelling and capitalization of the column name matter. Try temporarily renaming that column and look at the output to see what powerquery thinks that column is named
Once that is set, is the column formatted as numeric or alpha? If not numeric, change the column type or use Number.From() in your function
Try calling your function using a table with a single row, and the contents of the RemainingBudgetDays_RndUp column equal to a numeric five. Does it work? Then the data needs cleaning on some of the rows
Are there any nulls, alpha characters, out of bound, or other data in the RemainingBudgetDays_RndUp column that will break your function? To guard against that, try adding a try and otherwise null before and after strategic points in the function