Formula for rollup field and a comma

[Mark_Comish]

I need help with an IF formula. I have a roll-up field that sometimes has 1 number and sometimes 2 or more numbers separated by commas. I have a formula that removes everything after the first comma but if there are no commas the formula field is empty.

[Ilan_Ben_Yaakov]

hi,
try to set a condition before, something like

if (find(",",{field})=0,[MID...])

[Mark_Comish]

Ilan_Ben_Yaakov:

if (find(",",{field})=0,

Thank you for the solution!