webshim fails to grab the Spanish locale -

Firefox fails to catch the Spanish locale in webshim, it always looks in English but for example it works fine And France shows

how can he fix it?
I want my app for a browser app.

i dowload:

and add code to my html.

  & lt; Script src = "http://cdn.jsdelivr.net/webshim/1.15.7 / extra / modernizr-custom.js" & gt; & Lt; / Script & gt; & Lt ;! - polyfill to detect and load polyfiller file - & gt; & Lt; Script src = "http://cdn.jsdelivr.net/webshim/1.15.7/polyfiller.js" & gt; & Lt; / Script & gt; & Lt; Script src = "../../../process / js / formiffe-es.js" th: src = "@ {/ resources / js / formcfg-es.js}" & gt; & Lt; / Script & gt; & Lt; Script & gt; //webshim.setOptions('forms', {addValidators: true}); Webshim.setOptions ('form', {replaceValidationUI: true, lazy custom message: true, addValidators: true, override message: true}); Webshims.setOptions ('waitReady', incorrect); Webshims.setOptions ('forms-ext', {types: 'date'}); Webshims.polyfill ('forms forms-ext'); & Lt; / Script & gt;  

And missing sentences in the Spanish version.