Geoprocessing service runs fine when ran in ArcMap but not as geoprocessing

[anaruiz3]

Hi, 

I have create a ModelBuilder (10.2) to export a layer from a cooperative db to -zip, csv and excel file adding the current date to the filename. 

It works correctly when I run it on ArcMap, I publish as synchronous geoprocessing and the output doesn't show any url to download the result.

 

I have the attached the model. This model works perfectly as a geoproces when it take out the calculate value tool. I mean, it shows the urls to download the result and the result it is ok.

Anyone can help out with this?.

Thank you.