>>Nadya,
>>
>>One textbox will do
>>
>>It holds one integer
>>
>>Set
>>- its value to 0
>>- format to RL
>>- Inputmask to 99:99
>>
>>- Valid event to
>>

>>if( (int(this.value/100) > 24) or ( mod(this.Value,100) > 59) )
>>	wait window nowait '00:00 - 23:59'
>>	return 0
>>endif
>>

>>
>>Easily 'upgraded' to hh:mm:ss ( 99:99:99 )
>
>I quickly tried this solution, but it's a bit inconvenient for the input if, for example, I want to enter 1:10 (one hour 10 minutes) I asked for re-newing a subscription...

What problem do you have ?

for 1:10  enter 110