Applying multiple jQuery plugins

I have made two jquery plugins which both work in their own right.

If I call them using:

$('input').inputShrink();
$('input').fillForm();
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then the two effects work. However, if I do:

$('input').inputShrink().fillForm();

then only the first one is applied. It was my understanding you could do this, is there something in my plugins I need to set up?

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Quote from the jQuery docs : LINK

Maintain chainability in a plugin, you must make sure your plugin returns the thiskeyword.

In short - remember to return the jQuery object in your plugin.