Dear all,
there are two ways how part numbers (in string format) are written for a product category (fruit) in the data set: One way a) is without special characters e.g.
25020902231
and the second way b) is with special characters (**.-:*)
25.0209-0223.1
My goal is to replace all the part numbers of Apples within the column”fruits” with no special characters “.” They all have a length of 11. The conditions for replacing these part numbers are: if in column “fruit” the value is = “Apple” AND if in the column “part number” the part number is without “.” or the length of the part number of Apple is 11 then these part numbers should be replaced this way ( **.-:*). The part numbers of Oranges with “.” should not be replaced
I have tried this in the node Column Expression without any success
I am not sure how to write a javaScript which tells inserts “.” and “-” in certain positions within a string :
if (column(“Brand”)) == “Apple” && length(column(“Part Number”)) == 11))
{???join?? substr?? ),
else { column(“Part Number”)}
Any other solutions are welcome 
Fruit old Part Number correct new Part Number**
Banana 6104020923162 6104020923162
Apple 05.0137-0271.3 05.0137-0271.3
Orange 0.986494927 0.986494927
Apple 05013700093 05.0137-0009.3