After place s lien what else can i do to make then paid me? How long last my mechanical lien?
Typically, a Florida mechanics lien will last for one year after the claim is filed. If no enforcement action is initiated within that time frame, the claim expires and is no longer enforceable. Note, that there are certain actions a property owner can take to shorten that period of time such as serving a Notice of Contest of Lien; which will require the claimant to take action within 60 days of reciept. For more on that see: Florida Owner Contesting a Lien? Contractors Need to Act Quickly.
In the meantime, once the owner has recieved a copy of the lien, you should give the lien some time to go to work for you. Once a lien is filed, the property owner is under pressure to get the payment issue resolved. If, after some time, there is no resolution in sight, you can increase the pressure by sending a Notice of Intent to Foreclose. This isn't a required document, but it is fairly effective at inducing payment. Think of it a as a final warning letter that if you aren't paid within a certain amount of days; you're prepared to enforce your lien rights in court. And lastly, if there's no response, a foreclosure action may be necessary.
Here's some additional resources you may find helpful: