Please fix this not being able to create a single float only doubles is just wrong, double use more memory and in a replicated array your wasting space! so your forcing people to bloat there logic in blueprint for no reason let alone when you update your project from 4.27 all single floats are converted to doubles which is a major issue, not even progress bars in UMG support doubles!
The only way I have found to create a single is dragging of a preset one from a node.