The person that hired us signed a promissory note indicating they would pay us the money they owe to us 'upon sale with certificate of occupancy of the property'. This same person is quickly selling other properties they own ( that we did work on )- and is being very unresponsive to emails and such. There is one property they recently sold and told us that they 'didn't make money on the job' so they wont pay us about $32K they owe us on the project. That being said, we are concerned and we do not trust their 'commitments' so we are filing the lien. Do you think that we should upload/attach the promissory note to the lien?