Function with passing a char variable and return of a logical variable

Projects Programming
3

I not sure, how should I changed the sketch? Sorry.
I changed the sketch: e.g. I 've added a '&' etc.

char Host[30];     
bool internet = false;               
const char Host_001[]PROGMEM = ("www.google.com");
int pingResult;     // RTT of the PING


void setup() {
Serial.begin(115200);
  while ((!Serial && millis()< 5000))   {
    ;               // wait for serial port to connect. Needed for native USB port only
  }
bool mypingresult = PING(Host_001);
    if (mypingresult) {internet= true; Serial.println("o.k.");} else {internet= false;Serial.println("not o.k.");} 
  }
void loop(){
delay(20000);
}
//***********************************************************************************************
bool PING(char Host) {     // 

  pingResult = 50;  // dummy result

  if (pingResult >= 0) {
    Serial.println(F("output 1"));
    return true;
  } else {
    Serial.println(F("output 2")); 
    return false; 
  } 
}

I ve got the following error messages:
error: invalid conversion from 'const char*' to 'char' [-fpermissive]
bool mypingresult = PING(Host_001);

initializing argument 1 of 'bool PING(char)' [-fpermissive]
bool PING(char Host) {

Correct pointer type?