coding question

[quartzy]

I am coding a program similar to Stratch but using lights.

My program is:

Clear LED lights
set pressure to 130
if steam pressure < 90
turn on light 3
turn on light 4
warning: low pressure
if pressure > 90 < = 110 (and this is the line that does not work)
turn on light 1
turn on light 2
warning: pressure is normal

and so on

If the pressure is set to 111 it reads as normal when it should be high

I know this maybe not the place for it, but it is a programming question, if no one can help then never mind