Error after updating FlexSim

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Thomas JR asked Oct 21, '20 Ben Wilson commented Oct 23, '20

Error after updating FlexSim

I've just updated from 20.1.3 to the newest version.

At some point in my model I need to access a 2D array.

I simply use bracket syntax, MyArray[row][col] but FlexSim throws this error:

FlexScript exception: Invalid variant type used with [] array operator

It used to work just fine.

Specifically I use two labels of a 3D object as the indices of the 2D-array. Something like this:

int duration = Durations[room.Day][room.Booking_number];

where the labels "Day" and "Booking_number" were created as:

room.Day = 1;
room.Booking_number = 1;

I tried to convert the labels to variant:

Variant row = room.Day;
Variant col = room.Booking_number;
int duration = Durations[room.Day][room.Booking_number];

but without any success.

Software Version:

FlexSim 20.2.3

flexsim 20.2.3 array

· 5

5 |100000

Attachments: Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

Joerg Vogel commented · Oct 21, 2020 at 01:30 PM

And you are absolutely sure, that duration is 2-dimensional array like

[[1,2,3],[4,5,6],[0,1,0]]

, because read_values_of_2dim_array.fsmworks in FlexSim 20.2.3

0 ·

read-values-of-2dim-array.fsm (25.7 KiB)

Thomas JR Joerg Vogel commented · Oct 21, 2020 at 01:41 PM

@Jörg Vogel

Actually, Duration is also a label of some object, being initialized as

int n = 10;
someObject.Duration = Array(n);

Afterwards I push entries to each main entry like this

someObject.Duration[1].push(35.32);
someObject.Duration[1].push(17.12);
someObject.Duration[1].push(97.38);
someObject.Duration[2].push(3.12);
someObject.Duration[2].push(321.38);
someObject.Duration[3].push(48.32);
...

There are also some entries in the main list to which I don't push any values, e.g. someObject.Duration[5] is empty.

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Joerg Vogel commented · Oct 21, 2020 at 02:20 PM

Perhaps you must declare the value of label room.Day to be of the datatype number as int or double.

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Thomas JR Joerg Vogel commented · Oct 21, 2020 at 02:34 PM

@Jörg Vogel,

Think I found out why. Somehow my model tried to access someObject.Duration where the length of the list is 0.

Still, I wonder why FlexSim didn't complain about an arrayoutofboundexception while instead complaining about an invalid Variant type being used.

1 ·

Ben Wilson ♦♦ commented · Oct 23, 2020 at 02:57 PM

Hi @Thomas JR, was Jörg Vogel's answer helpful? If so, please click the red "Accept" button on their answer. Or if you still have questions, add a comment and we'll continue the conversation.

If we haven't heard back from you within 3 business days we'll auto-accept an answer, but you can always unaccept and comment back to reopen your question.

0 ·

Answer 1 · 2020-10-21T14:08:43Z

Joerg Vogel answered Oct 21, '20

I have gone through this again. I don't get any errors.

I have build a model in 20.1.2 and let it run in 20.2.3. I don't still see any errors.multidim_array_20_1.fsm

multidim-array-20-1.fsm (24.9 KiB)

5 |100000

Attachments: Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

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