Hi Iran Udayanga...
Does you want separate Price list or Two different currency to be maintained ?
If you required to have local currency and foreign currency.
Business One allows you to define a currency for each BP & GL account, while automatically suggesting the currency you have defined as default.
You can hence set a BP or account to be restricted to trading in either local currency or a distinct foreign currency. Alternatively, you can define 'All currencies' which allows posting to the GL or subledger account in all currencies. The account balance of these multi-currency accounts/BPs is always held in local currency in the background.
Reporting, such as Customer receivables can be done in BP currency, local currency or any defined foreign currency.
Financial reports such as trial balance can be viewed in local & system currency, system currency only or foreign currency.
Local Currency Select the local currency. The currencies defined in SAP Business One are available in the list. To define a new currency, select Define New.
System Currency SAP Business One can manage all transactions in a system currency parallel to the local currency. Select the required system currency from the list. To define a new currency, select Define New.
If defining a system currency that is not identical to the local (national) currency, the system currency can be used as the reporting currency. For example, the corporate group requires a different reporting currency from the national currency. Also define a daily exchange rate for the system currency. Every document, and all reports and balance sheets are posted in the database in both currencies.
If you do not have a reporting requirement in another currency, set the system currency to your local currency.
Default Account Currency Determines the default account currency for new accounts:
Local Currency: Transactions can be posted only in the defined local currency.
All Currencies: Transactions can be posted in all currencies defined in the company database; however, balances, totals, and reconciliations are calculated and displayed in local currency only.
Hope Helpful 
Regards
Kennedy