thank you TriggerX,

i put the fee as 0.0001 btc and still 0% propagation. it's acceptable even i lose these coins. the idea is to learn for future.

i found a formula: [no of inputs] x 148 + [no of outputs] x 68 +10 = [no of satoshi as fee].
in my case means 12,066 satoshi, and if i' knew it, i'd have put 20k satoshi, but is this enough?
is this formula generally applicable? if yes, how may i see the number of inputs before to set the fee?

the second issue: maybe after a period the tx will be refused by the network. will return the sent coins, or they are for ever gone? if will return, when?

thank you.