How to make an object be destroyed if a float is in a range

Getting Started
,
1

how do i make an object be destroyed if a float is in a range. and no i cannot just set it to <=0, there is a problem that arises when i do that.

2

well depending on what/where the float is, but a simple if (varliable < a_value) Destroy(thing);

3

i need it to be within a range of 0 to -999

4

What is the problem?

5 
if (float >= -999 && float <= 0){
    Destroy(object);
}