Have you followed procedure as described in this link 

Also note the note : 

Note
You need a SIMATIC HMI operator panel that supports scripts and faceplates to be able to use the sample library.
More information about operator panels is available in Entry ID:40227286.

https://support.industry.siemens.com/cs/document/59843820/what-are-the-options-for-configuring-a-radio-box-or-check-box-in-simatic-wincc-flexible-2008-?dti=0&lc=en-WW

Best Regards

hi Omega Projects thanks for answer, i follow the link and download the Check RadioBox library, i add in the WinCC Flexible and show me the same error the image of the book with X in color red. My device type is a Multi Panel 377 15'' Touch. 

Best regards 

You can try to update to SP3 and see if this fix your problem : 

Wincc Flexible 2008 SP3 download/order

Updates for Wincc flexible 2008 SP 3 

hi Omega Projects, i make the download the update but when i select the programs to be installed the software show me a fault. i attached the error during the installation.

Waiting for you help.

Best regards.

Hi,

This is because you try to install Update 7 for wincc flexible 2008 SP3.

You first need to install Wincc flexible 2008 SP3 itself.

This you need to order @ your local siemens distributor or ask them for a link.

It should be free  but you need to ask for it...