it's just you need to put them like this xxxx,xxxx,xxxx,xxxx the xxxx is the number of exp needed to level up
read this it's inside the txt!
// Structure of Database:
// Max Level,Class list,Type,Exp for Lv 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175
so you change the max level of the class type you want like
//Base - 3rd Jobs, Baby 3rds, Summoner
175,
to
255,
then add in the end the exp like here the end is 175 (255-175 = 80) put , then add 80 number separated by , and don't put , in the end
the guide make it easier for you but if you couldn't do it you can find your own way to do it