Can evaporated milk be converted to sweetened condensed? (Not a duplicate of this question, I don't believe)

If I have a recipe that calls for sweetened condensed milk but only have a can of evaporated milk, is there anything I can do to it to the evaporated milk to make it a suitable replacement for sweetened condensed milk?  Does the heating / sterilizing of evaporated milk ruin it as a replacement?
You may convert evaporated milk into condensed milk by adding sugar to it. For each cup of  evaporated milk add about 1 and 1/4 cups of sugar.  Pour the mixture in a pan, stir while heating on the stovetop until the sugar completely dissolves.  Let cool.  The heating of evaporated milk is similar to the treatment condensed milk undergoes, so the evaporated milk with sugar should be a perfect replacement.