let liquid = [["XX", "XX", "XX"], ["M1", "XX", "M1"], ["M1", "M2", "M1"]] for (var element in elements){ let a = elements[element].behavior; console.log(a, elements[element], liquid) if(a != undefined && typeof a != 'function'){ let i = 0; while (i < a.length){ if(typeof a[i] == "string"){ a[i] = a[i].split("|"); i += 1; } else { i += 1; } } elements[element].behavior = [[a[0][0], a[0][1], a[0][2]], [`${a[1][0]} AND M1`, a[1][1], `${a[1][2]} AND M1`], [`${a[2][0]} AND M1`, `${a[2][1]} AND M2`, `${a[2][2]} AND M1`]]; } else { elements[element].behavior = liquid; } }