Number Counter

In this video I wanted to make the numbers increase as each can came out. To begin with I used a linear expression with the formula:
startTime = 0 (what second the countdown should start) endTime = 4 (the time you want the countdown to stop)
beginValue = 0 (The value you want the countdown to start)
endValue = 70 (the value that you want the countdown to stop at)

t = linear(time, startTime, endTime, beginValue, endValue)

I then found another way to do this, using the slider control.
The Source text it Pickwhipped to the Slider control which is then keyframed to where you want the count to start and what value etc.

I found that the slider control gave less problems and was easier to use.