I am wondering how we can override a constraint in AMPL. in a very basic example :

```
var x >= 0  ;
var y  >= 0;

minimize cost : x^2 + y^4;

subject to constraint1 : x+2*y >= 100;

subject to constraint1 : x+2*y <= 10;

---------------------------------

"constraint1 is already defined"

```

AMPL uses the first "constraint1" as its constraint and ignores the second one , is there any way that AMPL uses the last "constraint1" ?