plz help my server plz

[liam1757]

some noob gav me a code and done this and mucked up plz help ill be very greatful tyvm m8s result is

client.java:14230: cannot find symbol
symbol : variable toSlot
location: class client
if ((bankItemsN[toSlot] + amount) <= maxItemAmount
^
Note: stream.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
1 error
Finished!
Press any key to continue . . .