Hi
It was such exemple here on forum. I give you a copy of these:
"Hello. i was doing this on PCU50.
You must make change in Regie.iNI .

Test this:
[TASKCONFIGURATION]
Task16=name := OEMFRAME, cmdLine := "calc.exe", Timeout := 10000, PreLoad := False
OEMFRAME.INI
[CALC]
X=300
Y=300
WIDTH=300
HEIGHT=300
AEDITOR.INI:
[CHILDS]
OEMFRAME=17

Softkey:

AEDITOR.COM:
HS16=("CALC")
EXE(OEMFRAME)
END_PRESS
RE_RU.INI:
[HSoftkeyTexts]
HSK16="CALC"
I was doing this on HMI with russian language. This is working"

I don't try it but I think that must work. Good luck
Nit

Prerequisite:

The cursor is positioned on an input field or input/output field.

=

Equal key

In this state, if you enter a basic arithmetic symbol (+, -, /, *) followed

by a value (e.g. 13.5) and

then press the input key, the next value entered is calculated with the

preceding value.

If the input/output field is opened with the input or equal key, the editor

is in insert mode; if the field is opened directly with a character, the

editor is in overwrite mode.

In pocket calculator mode, you can convert numeric values from the

metric to inch system by entering "I" and from the inch to metric

system by entering "M".

=

Proceed as follows to convert values:

value or enter a numeric value

• Press the equal key

• Enter the letter "I" (convert to inches) or "M" (convert to metric)

• Press the "input" key, the value is converted.

HTH,
SteveA