Free CDF player - reading data from URL and creating diagrams

Questions
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1

I am struggling a bit with how to structure the CDF code.

What I want to do is to read some data from a Google spreadsheet & then do some operations of this data and display the result in a diagram.

The pattern I currently have is to have a Dynamic[{..}, Manipulate[ (…), Initialize-> "data = Import[“URL”], SaveDefinitions-> True, Synchronous->False]
However, when this is deployed as a standalone CDF, the value of data stays the same everytime I open the CDF. Probably because of the “SaveDefinitions”. But when I remove the SaveDefinitions, the data doesn’t seem to be set.

I am looking for some pointers to examples with CDF:s or other sources.

2

Use RuleDelayed (:>) for the initialization, for example deploy this as a standalone and note how ‘a’ gets reinitialized every time:

Manipulate[ x + a, {x,0,1}, Initialization :> (a=RandomReal[]) ]