diff --git a/src/main/kotlin/main/vp_server_integration/Vp_server_integration.kt b/src/main/kotlin/main/vp_server_integration/Vp_server_integration.kt
index 7445b5e..4e3230a 100644
--- a/src/main/kotlin/main/vp_server_integration/Vp_server_integration.kt
+++ b/src/main/kotlin/main/vp_server_integration/Vp_server_integration.kt
@@ -113,7 +113,7 @@ class Vp_server_integration() : JavaPlugin(), CommandExecutor {
             COMMAND_REMOVE_MODE = properties.getProperty("command_remove_mode", DEFAULT_COMMAND_REMOVE_MODE).replace("'", "")
             COMMAND_REMOVE_COINS = properties.getProperty("command_remove_coins", DEFAULT_COMMAND_REMOVE_COINS).replace("'", "")
             COMMAND_REMOVE_ERROR = properties.getProperty("command_remove_error", DEFAULT_COMMAND_REMOVE_ERROR).replace("'", "")
-            LOCAL_CURRENCY_MINIMUM = properties.getProperty("command_remove_error", DEFAULT_LOCAL_CURRENCY_MINIMUM.toString()).replace("'", "").toDouble()
+            LOCAL_CURRENCY_MINIMUM = properties.getProperty("local_currency_minimum", DEFAULT_LOCAL_CURRENCY_MINIMUM.toString()).replace("'", "").toDouble()
             COURSE_MODE = properties.getProperty("course_mode", DEFAULT_COURSE_MODE).replace("'", "")
             COURSE_STATIC_VALUE = properties.getProperty("course_static_value", DEFAULT_COURSE_STATIC_VALUE.toString()).replace("'", "").toDouble()
             COURSE_DYNAMIC_COMMAND = properties.getProperty("course_dynamic_command", DEFAULT_COURSE_DYNAMIC_COMMAND).replace("'", "")
@@ -313,8 +313,8 @@ invoice_timeout_seconds=$DEFAULT_INVOICE_TIMEOUT_SECONDS
         }
 
         when (direction) {
-            "vpc" -> handleVpcConversion(sender, amount, course, args)
-            "lc" -> handleLcConversion(sender, amount, course, args)
+            "vpc" -> handleVpcConversion(sender, Utils.round(amount, NUM_AFTER_DOT), course, args)
+            "lc" -> handleLcConversion(sender, Utils.round(amount, NUM_AFTER_DOT), course, args)
         }
     }
 
@@ -373,7 +373,10 @@ invoice_timeout_seconds=$DEFAULT_INVOICE_TIMEOUT_SECONDS
             return
         }
 
-        if (amountVPC < 0.0001 || amount < 1)
+        if (amountVPC < 0.0001 || amount < LOCAL_CURRENCY_MINIMUM) {
+            Utils.send(sender, "&cСлишком маленькая входная или выходная сумма.")
+            return
+        }
 
         if (args.size == 4) {
             // Execute confirmed conversion
@@ -415,9 +418,14 @@ invoice_timeout_seconds=$DEFAULT_INVOICE_TIMEOUT_SECONDS
         }
 
         LOGGER.info("Amount: $amount, Course: $course")
-        val amountLC = amount * course * (1 + COURSE_COMMISSION / 100)
+        val amountLC = Utils.round(amount * course * (1 + COURSE_COMMISSION / 100), NUM_AFTER_DOT)
         LOGGER.info("Converted amount: $amountLC")
 
+        if (amount < 0.0001 || amountLC < LOCAL_CURRENCY_MINIMUM) {
+            Utils.send(sender, "&cСлишком маленькая входная или выходная сумма.")
+            return
+        }
+
         // Create new invoice
         val invoiceId = VpcApi.create_invoice(amount).toString()
         TO_PAY_INVOICES[sender.name] = invoiceId