Error while using arguments as -w 28000 -c 30000

Hi,
I get the below error while using the arguments as -w 28000 -c 30000

/usr/local/nagios/libexec/check_memory.py -w 28000 -c 30000
Traceback (most recent call last):
File “/usr/local/nagios/libexec/check_memory.py”, line 67, in ?
main()
File “/usr/local/nagios/libexec/check_memory.py”, line 64, in main
checkargv()
File “/usr/local/nagios/libexec/check_memory.py”, line 49, in checkargv
check()
File “/usr/local/nagios/libexec/check_memory.py”, line 61, in check
checkmem()
File “/usr/local/nagios/libexec/check_memory.py”, line 35, in checkmem
elif( int(sys.argv[1])