Java to Labview, using "if else" statements and pressing buttons

[Lemonsy]

I'm originally a java programmer, but I've taken on Labview since this past last year. I'm trying to make a code that will assign a value of 0 when a button ( button 1) is pressed and then change that value into a 1. When the button is then pressed again the value is changed back into a 0.

This code is for a claw that will open and close. Any advice, help, or screenshots?

int x=reader.nextInt(); // takes value of pressing the claw button
while (y==1) //the robot is turned on
{
if(x==-1)
{
claw=0; //open position
}
else(x==0)
{
claw=1; //close position
}

x=reader.nextInt(); //checks the next value of the claw button
y=OnOrOff.nextInt() //checks if robot is on or off
}