Pošto vidim da neće niko da odgovori, snašao sam se na drugom forumu, možda nekome i zatreba...
Citat:
If your forms were created with the Acrobat Form tool, you can just add the field values and the character string in the custom calculation of the combined field:
var sCity = this.getField("Mesto").value;
var sStreet = this.getField("AdresaPreduzeća").value;
event.value = sStreet + ", " + sCity;