how to handle 3 or more Select Box

[monomaldito]

hi everyone,
i have a problem with select box, i need to create 3 select box, the first load the data from my DB created on mysql, that's work without problem.

when i select on elemento from my list, i call a function created on javascript, that function get the id from my fisrt list and select every data related with the ID.

my problem is when a clicked on my 2nd list i need to call another function in javascript who do exaclty the same that the first javascript function, the problem is that the second function doesn't get any information.

i tested both MySQL querys and both work perfectly, anyone who can helpe me ??

// fillStage() this one works perfectly and show the information without problems

function fillStage(){
	var project = $("#project").val();
	$.ajax({
		url:'fill_stage_ajax.php',
		data:{selected : project},
		type:'POST',
		success: function(data){
			$("#stage").html(data);
			} 
		})
	}

///this one doesn't work
function fillActivity(){
	var stage = $("#stage").val();
	$.ajax({
		url:'fill_activity_ajax.php',
		data:{selected : stage},
		type:'POST',
		success: function(data){
			$("#activity").html(data);
			}
		})
	}
    </script>

[Dormilich]

there are too many unknowns to solve this.
- what’s the according HTML code?
- what’s the according PHP code?
- what do the PHP scripts return (Dev tools, network tab)?

also:
- add an error listener to your ajax handle