Update viscircles position in an interactive plot

I am creating a circle at a specified position using

F = viscircles([Xposition Yposition], radious);

Later on the code I need to update the circles' position by using the hanfle `F`, in the same manner that if this was a scatter plot I could say

set(F, 'XData', ...

What is the equivalent command for setting the circles' center?

[Adam]

When i tested it the result of viscircles (i.e. f) is a hggroup object containing 2 Lines, though I'm not sure why, both lines show the circle, but seem to have slightly different positional data.

You could edit each one with e.g.

F.Children(1).XData
F.Children(2).XData