How can I change values in a specific column depending on values of other columns?

[Anonymous]

Hi,

I created a duplicate of the column "Einzeldauer" and named it "Ersatzstunden". The column "Einzeldauer" must stay untouched.

1. If a cell in column "Grund Abwesend" is "Feiertag" and the cell in the column "Kommentar" contains "ÜÜ" then the value of the cell in the column "Ersatzstunden" should stay untouched.

2. If a cell in column "Grund Abwesend" is "Feiertag" and the cell in the column "Kommentar" contains "ÜÜN" then the value of the cell in the column "Ersatzstunden" must be multiplied by -1.

3. In any other case the value of the cell in the column "Ersatzstunden" should be "null".

original:

expected result:

Which formula would I have to enter into the Advanced Editor?

Many thanks for hints!

[JorgePinho · Accepted solution]

Hello @Anonymous !

My suggestion is:

1. Delete the current Ersatzstunden column you have

2. Add Column > Custom Column and try this 

if [Grund Abwesend] = "Feiertag" and Text.Contains([Kommentar], "ÜÜ") then [Einzeldauer]
else if [Grund Abwesend] = "Feiertag" and Text.Contains([Kommentar], "ÜÜN") then Value.Multiply([Einzeldauer],-1)
else null

[Anonymous]

Thank you very much. It works not as expected as the first "ÜÜ" already fulfills the "if" and so "ÜÜN" will never be identified. Once I changed "ÜÜ" to "ÜÜP" in my source files and changing the formula as follows ist works fine:

if [Grund Abwesend] = "Feiertag" and Text.Contains([Kommentar], "ÜÜP") then [Einzeldauer]
else if [Grund Abwesend] = "Feiertag" and Text.Contains([Kommentar], "ÜÜN") then Value.Multiply([Einzeldauer],-1)
else null