Factorio Forums

It seems, that blueprint parameters do not correctly set/update the "Control signal" for "Set stack size" in inserter BP.

Here is a minimal setup, a inserter with used iron bacteria for filter and enable circuit, as well as stack size signal. I created a BP that replaces the bacteria with parameter 0. After placing the BP and picking nutritions in this case, the filter and enable conditions are updated, the signal is not. When trying to create a new parametrized BP from the nutrition inserter it does not show the bacteria even it is still used as control signal The BP String (with paramter)

I thought I was going crazy! I'm having the same issue. No prompt appears for the inserter parameter to input a value, however if you put a formula in the field, that does work.

I'm not sure this is related or different; but I'm seeing an issue where when I enter a formula with the assembler (p0_s) - it sets the stack size correctly.

But when I set it with the biochamber, it doesn't appear to set correctly.

I've attached 4 screenshots. 2 of the parameters/formula, 2 of the results once placed down.

In the biochamber case, it just selects the multiplier; in the assembler case, it properly selects the stack size as a multiplier.

edit: as an update, I got it to work correctly when I blueprinted it horizontally rather than vertically.. not sure why that fixed it but it did?

Hello, thanks for the report.
I added the stack size value to be configurable by the blueprint parameters system for the next release.