Doesn't load levels

on the left of gdevelop we have the list of all the scenes we create… before this update it was enough to open the scene and test… now even if I’m in other scenes and I click on preview it always shows me the same scene… it’s a bug?? or am I doing something wrong??? because until shortly before writing this message everything was going as usual… that is… you chose the scene and did the previews… but not now…
thanks to all in advance
ssssss

ok ok ok sorry my bad…
the scenarios all have the same background i was just trying to set the hp of some element “variable.object.hp” based on the global variables “global.variable.hp” but apparently it’s not simple… it just just starts the level destroy all the elements leaving the scene empty and i got confused… sorry…