Retrieve input form data

Hi,
I am using the cimy user plugin, and have tried posting in their support area with no luck. I have a really simple question that I need help with.

I have created a new user registration field called PHONENUMBER that shows up on the register page. I have a page where you can view all your account details and this PHONENUMBER field never contains any value when you enter it upon registration.

I am sure that it’s to do with my form names and value parameters, but I have tried everything that I can think of.

Here is the source for the registration field PHONENUMBER:

<p id="cimy_uef_p_field_2">
<label for="cimy_uef_2">Phone:</label>
<input type="text" name="cimy_uef_PHONENUMBER" id="cimy_uef_2" class="cimy_uef_input_27" value="" maxlength="10" tabindex="24" />
</p>

Here is the source for the page where I am trying to output this field:

<div class="details_fields">
<label for="email"><?php echo SPEC($GLOBALS['_LANG']['_tpl_myaccount27']) ?></label>
<input type="text" name="form[cimy_uef_PHONENUMBER]" value="<?php get_cimyFieldValue($post->ID,'PHONENUMBER',true);?>" class="short right20" />
</div>

Can anyone offer some help or tips please.