Thanks on replies everyone.. I am novice to any type of scripting so I don't get it what to type in field calculator.. I need script which will populate new field, make concatenation of three fields (GJ, Odeljenje, Odsek) with couple conditions in field Odeljenje (test length of the content) and in field Odsek (test is the content number and length of it and if it is not change the case of text), basically translate excel formula CONCATENATE(A2,IF(LEN(B2)=1,CONCATENATE("00",B2),IF(LEN(B2)=2,CONCATENATE("0",B2),B2)),IF(ISNUMBER(C2+1),IF(LEN(C2)<2,CONCATENATE("0",C2),C2),LOWER(C2))) to script (either with python or vba).
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