How with Zerocoin convert to Basecoin?

You can use the following command:

spendzerocoin

amount = Amount to spend.
mintchange = Input true if you want to re-mint any leftover change, input false if not.
minimizechange = Input true if you want to minimize returning change, input false if not.
security level = Amount of checkpoints to add to the accumulator. We have been recommending a value of 42 for this, but you can increase it to 100 max. Note that the more checkpoints there are, the longer the minting process takes.
address = If basecoin address, funds will arrive in basecoin. If stealth address, funds will arrive in CT.

To simplify, we recommend the following:

spendzerocoin false true 42

When typing in the consode gives an error: Try to spend with a higher security level to include more coins (code -4)
What could be the problem?