Clarification of the meaning of "reset"

For CSSStyleDeclaration's description of its setCssText method, the
description states that calling this method results in the parsing of the
new value and resetting of properties in the declaration block.  Does this
mean that all outstanding references (ex. CSSValues, RGBColors) will no
longer be valid or does it mean that the outstanding references will be
updated with the new values?  
[i.e. does 'reset' = 'update outstanding references' or 'invalidate
outstanding references']

Example: Assume I have a CSSStyleDeclaration named 'style'
	style.setCssText("ascent: 10"); 
	CSSValue value = style.getPropertyCSSValue("ascent"); //retrieved a
reference
	style.setCssText("ascent: 88"); //"reset" the ascent property
	((CSSPrimitiveValue)value).getFloatValue(CSS_NUMBER);
Does the last line return "88", that is, does the reference get updated
after the last setCssText call or should the outstanding references no
longer be part of the CSS object tree?
Thanks for the clarification.
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Blaine