Code for fetching MSEG-DUBMTR data positive/negative in Query

Dear Experts,

I've made a query where the main table is MSEG and join with MKPF.

But I need to fetch data from DUBMTR (Amount in Local Currency) and MENGE_D (Quantity) as positive/negative value depends on following movement type.

101, 918, 919, 262, 602 as positive

102, 917, 920, 261, 601 as negative.

Would you please advice to make coding for this.

Thanks in advance

Zaied