I must rewrite:
My question is how you can add the variable 'value' towards the url for every rewrited URL (it is a hard coded value) ?
#RewriteRule ^/app_name(.*) /context$1
Do this rule:
RewriteRule ^/app_name(/.*)?$ /context$1?value=1 [QSA]
The QSA flag would be to instantly append the initial query towards the brand new one.