Note: This procedure requires editing a game file; creating a backup copy of the file before proceeding. Using a text editor, edit the "missionbrief.txt and "missioncompleted1.txt" files in the "/data/missions/<mission name>/" folder. In the "missionbrief.txt" file, look for the amount of pesos and increase it to the number desired. In the "missioncompleted1.txt" file, look for the amount of pesos and set the same number. Play the mission and get your reward.