[SMARTY] What's wrong with this SmartyValidate

Well I continue with my form validation using SmartyValidate plugin. Now I try to use the validators for image elements. See the code below:
PHP:
----
SmartyValidate::register_validator('fimagen_type','aImagen:jpg,gif,png','isFileType');
SmartyValidate::register_validator('fimagen_size','aImagen:250k','isFileSize');

TPL:
----
<input name="aImagen" type="file" id="aImagen" /> 
<div class="errormsg">
 {validate id="fimagen_type" field="aImagen" message="Solo los siguientes tipos de extensiones son permitidos: PNG, JPG/JPEG, GIF"}
 {validate id="fimagen_size" field="aImagen" message="El peso de la imagen no puede exceder los 250kb"}
</div>

As you can see I register two different validators. One for image type and other for image size. When I pick in "Examine" button and search a file in my HDD that perform the validation criteria, for example:
 1) file1.jpg - 125kb

I obtain always these PHP notice:
Quote:
------
Notice: Undefined index: aImagen in D:\Server\WWWRoot\ecommerce\smarty\SmartyValidate.class.php on line 225
Notice: Undefined index: aImagen in D:\Server\WWWRoot\ecommerce\smarty\SmartyValidate.class.php on line 241
Notice: Undefined index: aImagen in D:\Server\WWWRoot\ecommerce\smarty\SmartyValidate.class.php on line 255
Notice: Undefined index: aImagen in D:\Server\WWWRoot\ecommerce\smarty\SmartyValidate.class.php on line 225
Notice: Undefined index: aImagen in D:\Server\WWWRoot\ecommerce\smarty\SmartyValidate.class.php on line 225
Notice: Undefined index: aImagen in D:\Server\WWWRoot\ecommerce\smarty\SmartyValidate.class.php on line 241
Notice: Undefined index: aImagen in D:\Server\WWWRoot\ecommerce\smarty\SmartyValidate.class.php on line 255

One another thing is if I leave the Image Field empty and not try to upload any file, then I always obtain this notice or warnings?

Regards
ReynierPM
4to. año Ing. Informática
Usuario registrado de Linux: #310201
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