user18095: I wanted to parent the effect transform expression to the tracking motion (null object)
When I saw the tutorials.. it showed me to click and drag the pick whip, but on my after effects there are no pick whip on the side of transform value


user1950: Expressions aren't parented. They use the same kind of widget but it's not the one in the parent column.
You need to enable expressions on the property by alt-clicking the stopwatch. Now you'll see the expressions pickwhip, as well as the dropdown with the expressions menu and so on. You'll know that expressions are applied because the value will turn red.


18095: <p>I wanted to parent the effect transform expression to the tracking motion (null object)</p>

<p>When I saw the tutorials.. it showed me to click and drag the pick whip, but on my after effects there are no pick whip on the side of transform value</p>

<p><a href="https://i.stack.imgur.com/g38xB.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/g38xB.jpg" alt="Not Showed"></a></p>
 1950: <p>Expressions aren't parented. They use the same kind of widget but it's not the one in the parent column.</p>

<p>You need to enable expressions on the property by <kbd>alt</kbd>-clicking the stopwatch. Now you'll see the expressions pickwhip, as well as the dropdown with the expressions menu and so on. You'll know that expressions are applied because the value will turn red.</p>

<p><a href="https://i.stack.imgur.com/SvF1w.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/SvF1w.png" alt="enter image description here"></a></p>
