Example with all variables modifiable

---                                                                             
var1: 0.0                     # The first variable                              
var2: 0.0                     # The second variable                             
var3: 0.0                     # The third variable                              
var4: 10.1                    # The forth variable                              
var5: 10.1                    # The fifth variable                              
var6: 10.1                    # The sixth variable