"i'm only able to see the first value of the tag, the tag does not refresh."This may be your introduction to the "update deadband". There are several deadbands associated with DSC tags and there is a Knowledgebase article outlining them
here.
The value in the DSC tag engine won't change/update until the actual value changes by more than the update deadband. For new tags, it defaults (at least in LVDSC v6.1) to 1 (1% of a 0-100 range).
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Fading out. " ... J. Arthur Rank on gong."