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# Logical Comparisons

A logical comparison is an expression that evaluates to TRUE or FALSE. These may use the equals (=), not-equals (!=), greater-than (>), greater-than-or-equal to (>=), less-than (<) and less-than-or-equal to (<=) operators, e.g.  
  

```
undefined @(contact.age > 18)
```

Note that when comparing text values, the equals ( = ) and not-equals ( != ) operators are case-insensitive.