problem in validation when used type float or currency of field

[akkimca]

hello,

i m using sugarcrm 5.5.1
i dont know this is my problem or inbuilt sugarcrm problem. pls help me to solve it.
i defined one field like this

 'unit_price' => 
  array (
    'required' => true,
    'name' => 'unit_price',
    'vname' => 'LBL_UNIT_PRICE',
    'type' => 'currency',
    'massupdate' => 0,
    'comments' => '',
    'help' => '',
    'importable' => 'true',
    'duplicate_merge' => 'disabled',
    'duplicate_merge_dom_value' => '0',
    'audited' => 0,
    'reportable' => 0,
    'len' => 26,'precision'=>'2',
  ), 
  

when i enter value like this a10 as input than it validate properly but when i try this like
10a than it allowed me to save. Sugar dont validate or not giving me any error msg for this



pls help