How to determine the number of the active Analysis Window

[TibetanTreeFrog]

I am trying to find number of active analysis window. The code below never creates variable activeWin even though I have one of the analysis windows activated.

Any help would be greatly appreciated, thanks.

AB = CreateObject( "Broker.Application" );
	Newa =  ab.analysisdocs;
	n=ab.activewindow;
	cnt=newa.count;
		
for( i = 0; i <= cnt; i++ ) 
{
	
			if(newa.item(i)==n)
			{
				activeWin=i;
			}
			
}type or paste code here

[Tomasz]

ActiveWindow is an active Chart window, not analysis window.

AmiBroker has multiple types of windows and documents each type having different collection of objects.

[TibetanTreeFrog]

@TibetanTreeFrog

AB = CreateObject( "Broker.Application" );
	Newa =  ab.analysisdocs;
	n=ab.activewindow;
	cnt=newa.count;
		
for( i = 0; i <= cnt; i++ ) 
{
	
			if(newa.item(i)==n)
			{
				activeWin=i;
			}
			

Thanks Tomasz, here is the corrected code

AB = CreateObject( "Broker.Application" );
	Newa =  ab.analysisdocs;
	n=ab.activeDocument;
	cnt=newa.count;
		
for( i = 0; i <= cnt; i++ ) 
{
	
			if(newa.item(i)==n)
			{
				activeWin=i;
			}