What is the correct syntax for using QueryParameters in a QueryRepater control?

In an example, I have the following control:

cc1:QueryRepeater
ID=QueryRepeater1
QueryName=custom.galleryImage.selectall
TransformationName=custom.galleryImage.popUpView
runat=server

With the following additional code in the page_load:

protected void Page_Load(object sender, EventArgs e)
{
QueryRepeater1.QueryParameters = ????
}

My question is what to substitute in place of the ????

There is no mention anywhere in the documentation about this, unless I missed it. Any help greatly appreciated - thanks!

Rgds,

Mike