GML Global Variables not being updated

Hey coders, I initialise all my global variables in my first page. When i move into a fight i want the if/else statements to allow for me to create a battle system but the global variables are not being updated. (Also to note the global.MonsterSpeed> global.Spd is always called even if Spd is larger than MonsterSpeed. The randomNumb1/2/3/4 are all local variables)

if mouse_check_button_released(mb_left) && position_meeting(mouse_x, mouse_y, oRush)
{
if mouse_check_button_released(mb_left){
if (global.MonsterSpeed> global.Spd)
global.HP -= 10;
show_message("The beast is quicker than you, you have taken damage")
}
else if (global.MonsterSpeed = global.Spd){
global.HP -= randomNumb2;
global.MonsterHealth -=randomNumb3;
show_message("The beast has evenly matched your rush attack, you both take a small amount of damage");
}
else if (global.Spd > global.MonsterSpeed) {

global.MonsterHealth -= randomNumb4;
show_message("You catch the beast off guard. The beast takes a devastating blow");
} }

//This is my INITIALISE code:
global.Spd = 5;
global.Popularity = 0;


global.MonsterHealth = random_range(2, 5) ;
global.MonsterSpeed = 1;
global.MonsterGold = random_range(2,10);

//THIS IS WHERE I WOULD END THE FIGHT IF LOST:
if (global.Health <= 0){
show_message("You have won the fight, as a prize you gained " + string(global.MonsterGold))
global.MonsterGold += global.Gold;
room_goto(OutsideColusuem);
}

 

Have you drawn the variables on screen to test and see if the events are actually running? Looks like you may have forgot to put some brackets by global.HP-=10. I'm not always a fan of 'else' but try it like this and see how it does. I only typed it like this so maybe you can see { } better...



if (mouse_check_button_released(mb_left) && position_meeting(mouse_x, mouse_y, oRush))
{
if mouse_check_button_released(mb_left)
{
if (global.MonsterSpeed> global.Spd)
{
global.HP -= 10;
show_message("The beast is quicker than you, you have taken damage");
}
}
else
{
if (global.MonsterSpeed == global.Spd)
{
global.HP -= randomNumb2;
global.MonsterHealth -=randomNumb3;
show_message("The beast has evenly matched your rush attack, you both take a small amount of damage");
}
}
else
{
if (global.Spd > global.MonsterSpeed)
{
global.MonsterHealth -= randomNumb4;
show_message("You catch the beast off guard. The beast takes a devastating blow");
}
}
}

//This is my INITIALISE code:
global.Spd = 5;
global.Popularity = 0;

global.MonsterHealth = random_range(2, 5) ;
global.MonsterSpeed = 1;
global.MonsterGold = random_range(2,10);

//THIS IS WHERE I WOULD END THE FIGHT IF LOST:
if (global.Health <= 0)
{
show_message("You have won the fight, as a prize you gained " + string(global.MonsterGold))
global.MonsterGold += global.Gold;
room_goto(OutsideColusuem);
}