Hi, I have created two Process Variables, one is PV1 which can store multip

I believe this depends on the type; I guess what you're using there is text single and text multiple, and mapping the multiple to the single will do an implicit tostring() to the array which results in the semicolons.

if you do an explicit joinarray() you can determine the delimiter yourself.

Adding to above inputs, you can find more information in "Process history" where your multiple PV1 values converted to tostring() array implicitly.

@munichandras, When the multiple type text variable or integer variable is assigned to a single type text variable then the array is stored as text separated with semicolon delimiter. Appian uses semicolon delimiter by default.
If the multiple type integer variable is stored in to a single type integer value then the first array value is stored in to the single type process variable.
If you want to replace the array separation with other than semicolon delimiter then you can use joinArray(array,delimiter) and you can retrieve the values in an array using split(text,delimiter).