@Guadalupe Monroy
"Yes, but when I register the inventory through a journal entry the profit & loss is mixed up"
The only way the journal entry will change your P&L is if the journal entry contains income or expense accounts. Adding inventory value via a journal entry should be done with a debit to Inventory (asset account) and a credit to another non-income/expense account (unless you're trying to offset inventory to COGS). You didn't answer the question in my previous post so I don't know what you're trying to accomplish - adding just inventory value, adding inventory items or adjusting your inventory value...
