I cant execute pig queries in HUE

Hello,
i cant execute pig queries i keep on getting this message:
{“exception”:“AccessControlException”,“javaClassName”:“org.apache.hadoop.security.AccessControlException”,“message”:"Permission denied: user=, access=WRITE,

Error is self-explanatory. You have write access to only your home folder in HDFS

yes i m trying to load a file from my folder under user/myusernme/pig/filename what do i need to change.
Thanks