filter data block

i have tabular form based on database table
i want to filter records based on many criteria

i started with one column like this :

i created no database block , create non database item name it : t_date  
i created one push button , i set the when button press like this
SET_BLOCK_PROPERTY('gen_ledgers',DEFAULT_WHERE ,to_date(:genral.t_date)); 

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but when i select a date into t_date then i pressed the button , it return error , enable to perform a uqery
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HuaMin ChenProblem resolverCommented:
Can you instead create database block by putting the current table name to that block, and retry? thanks
NiceMan331Author Commented:
you mean instead of creating the non_database block , i create another database block ?
or to shift the non_database items to the tabular database block ?
HuaMin ChenProblem resolverCommented:
To shift it to tabular database block. thanks
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NiceMan331Author Commented:
sorry , i didn't understand
can please do more explanation
NiceMan331Author Commented:
i got the solution
i had mistake in the trigger
the correct  code is like this

	x varchar2(1000); 

	X := 'Acc_no = 21210';
	X := X || '  AND   ' || 'doc_date > = ' || chr(39) ||to_char(:gen_ledgers.F_date, 'dd-mm-yyyy')|| chr(39);
	x := X || '  AND   ' || 'doc_date < = ' || chr(39) ||to_char(:gen_ledgers.t_date, 'dd-mm-yyyy')|| chr(39);


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NiceMan331Author Commented:
i got no useful answer
then i search the web , i found the answer in another site
if you like to not accept my answer , i have no problem to delete the question
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