Controlling camera with null object

Hi all,

Basically I'm doing a rhythmic typing video but I can't seem to control the camera seen below.

All tutorials I have seen allow the Null to move the camera but all it seems to be doing is moving the orange box behind it.

I want to zoom on the word 'THERE'S' and pan across for each word, then zoom out at the end to show the whole line.

Any ideas?

Thanks,

Scott