Royal Guard Inspiration Skill effect

[Myth]

how can i change the effect of inspiration skill of Royal Guard which is +12 i will turn it into +25

 

 

here's the skill.c of inspiration

 

	case LG_INSPIRATION:
		if( sd && !map[sd->bl.m].flag.noexppenalty && sd->status.base_level != MAX_LEVEL ) {
				sd->status.base_exp -= min(sd->status.base_exp, pc_nextbaseexp(sd) * 1 / 100); // 1% penalty.
				sd->status.job_exp -= min(sd->status.job_exp, pc_nextjobexp(sd) * 1 / 100);
				clif_updatestatus(sd,SP_BASEEXP);
				clif_updatestatus(sd,SP_JOBEXP);
		}
			clif_skill_nodamage(bl,src,skill_id,skill_lv,
				sc_start(src,bl, type, 100, skill_lv, skill_get_time(skill_id, skill_lv)));
		break;