(Mis)Understanding Barstatus

[BlueHorseshoe 10]

My understanding of the following code is that it should begin to plot at 0 with the open of a bar, and then increase with each tick until the close of that bar. The value of the "count" variable should reset to zero on the first tick of each bar; instead the variable remembers its value from the prior bar.

 

Any suggestions as to why?

 

BlueHorseshoe

 

vars: intrabarpersist count(0);

If barstatus(1)=0 then
count=0
else
count=count+1;

plot1(count);