You need to replace the ‘X’ in the cheat with a number between -100 and 100 to set the friendship level to that amount between the two Sims you’ve entered the names of. Modify Sims 4 Friendship: This will increase (or decrease) the friendship level of two Sims. Keep in mind, you need to change the (Sim1Name) and (Sim2Name) with the names of your actual Sims, and leave out the brackets.