How to set data type and intial values.

[birdsong]

How can a make blockly keep a data type? this Function doesnt work, because 0.1 rounds down to 0 every time the code is executed. It is for an hour meter, I want to add 0.1 every 6mins.
This is what blockly automaticaly generates;

if bTm6min and bRunFan:
    fPvHrs = (fPvHrs if isinstance(fPvHrs, Number) else 0) + 0.1

When i manually change the code the problem goes away until blockly reverts back to the old code again.

fPvHrs = fPvHrs + 0.1

[m5stack]

the bug seem like from micropython. so , maybe you could use other way to change variable.
eg:

[robalstona]

Ewentually add 1 instead 0.1 and the end of your calculations divide a value by 10.

[birdsong]

Converts to;

  if bRunFan and bRunFan != bRunFanOld:
    fPvHrs = 0.01
  if bTm6min and bRunFan:
    fPvHrs = fPvHrs + 0.01
  bRunFanOld = bRunFan

Thanks M5stack, this worked.
I didn't want to divide by 10 because I would have to do that everywhere, slow the execution speed, its a slippery slope. The esp32 has very long divide instruction time compared to addition and multiplication.