Memory update using web services

reading the Web Services Guide, I'm trying to incorporate some (EMS) features in my software.

I succeded in creating and producing new entitlements but I can't update (hardware) key memory specifying the <memorysegment> tag.

I tried to update memory in different ways:

- Following the chapter 4.6.10. Sample XML for Entitlement Web Services, I tried to add values in the memorySegments tags as follow:

      <memorySegments><text>32</text><size>1</size><offset>0x0000</offset><color>#8b008b</color>  <saot>true</saot><memoryType><id>1</id></memoryType></memorySegments>

but it doesn't work, no data on memory.

- Then I tried to define a new product with memory segment (from EMS management system), setting to TRUE "specify during Entitlement generation" and writing something in the text field. 

Then, during the creation of the entitlement xml, I specified in the product details the memory data (4.5.4. Edit Product Properties).

In this case, it seems that the old text is re-written on the memory (such as my update doesn't affect).

- I tried also to define a new product with the text field empty. But I got same result: in this case the memory remains empty even after the entitlement (with some text in that memory segment) has been applied to the key.

I really can't understand if I'm doing something wrong or why it doesn't work for some reasons.

Can someone help me?

Thanks,

Lorenzo