LAB-4 Conditional Operator unable to find results

Using the query in step 2 as a starting point, amend the query to scan through Labs/Apache/Access and return the number of redirects. What's the sum of redirects for the last 15 minutes? Round to the nearest thousand. 

Hint: This will require adding an additional if expression for redirects:

if(status_code matches "3*", 1, 0) as redirects 

AND an additional sum expression in the last line:

sum(redirects) as redirects_cnt 

_sourceCategory=Labs/Apache/Access
| parse "HTTP/1.1\" * " as redirects
| if(status_code matches "3*", 1, 0) as redirects
| sum(redirects) as redirects_cnt