add item to the layer at particular time

Dear ae fellows,

I'm writing a simple script which imports a png sequence into the composition and adds it to the layers at a particular time (for example at the time where a time slider on a time track is positioned at the moment).

Is there a way to insert an item at a particulat time?

Right now, I'm only able to insert my sequence at t = 0

So far my code looks as follows

// ******** importing a sequence  into project**********************

var importOptions = new ImportOptions();
importOptions.file = new File(file);  // file is the first file in my png sequence
importOptions.sequence = true;
importOptions.forceAlphabetical = false;
var item = app.project.importFile(importOptions);

// ******** end of importing a sequence  into project**********************

var activeItem = app.project.activeItem;

//******** position of a time slider****************************

time = app.project.activeItem.time;

//************** here I add png sequence at time t = 0.
var solidLayer = activeItem.layers.add(item);

How would I add it at  t= time ?

Yaroslav.