@param instead of actual value in stored proc

I'm executing a stored procedure, but I',m receiving @param... instead of the actual value of the parameter.

This is the code I have in retool:

EXEC Spisa_Stock
{{txtStockYears.value}},
'{{filterCategory.value.toString()}}',
'{{filterProvider.value.toString()}}',
'{{filterCountry.value.toString()}}',
{{chkNeedRestock.value ? 1 : 0}}

and this is what I logged from DB.

image

Thoughts?